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TECHNICAL DATA

Sheet Gauges    Metric Equivalents

S.W.G	Thickness (mm)	B.G.	Weight Kg/M²
	6.35	4	49.80
4	5.89		46.20
	5.72	5	44.80
5	5.39		42.30
	5.03	6	39.40
6	4.48		38.30
7	4.47	7	35.10
8	4.06		31.90
	3.99	8	31.30
9	3.64		28.50
	3.53	9	27.70
10	3.25		25.50
	3.18	10	24.90
11	2.95		23.10
	2.82	11	22.10
12	2.64		20.70
	2.52	12	19.70
13	2.34		18.30
	2.24	13	17.50
14	2.03		15.90
	1.98	14	15.50
15	1.83		14.30
	1.75	15	13.80
16	1.63		12.80
	1.59	16	11.20
17	1.42		11.20
	1.40	17	11.00
	1.26	18	9.86
18	1.21		9.52
	1.12	19	8.77
19	1.02		7.97
	0.99	20	7.77
20	0.91		7.17
	0.89	21	6.95
21	0.81		6.37
	0.79	22	6.18
22	0.71	23	5.54
	0.63	24	4.92
23	0.61		4.76
24	0.56	25	4.38
25	0.51		3.98
	0.50	26	3.90
26	0.46		3.59
	0.43	27	3.39
27	0.42		3.29

Conversion Tables Imperial to Metric – Metric to Imperial

LENGTH
1 inch = 25.4mm	1mm = 0.03437 inch
1 foot = 304.0mm	1 metre = 3.2808 feet
1 yard = 0.9144 metre	1 metre = 1.09936 yards

WEIGHT
1 ounce = 28.35 grams	1 gram = 0.035274 oz.
1 pound = 0.4356 kg	1 kilogram = 2.204621 lbs
1 tom = 1.01605 tonnes	1 tonne = 0.9842 ton

AREA
1 inch² = 645.16mm²	1 mm² = 0.00155 inch
1 foot² = 0.0929 m²	1 metre² = 10.765 foot²

WEIGHT / LENGTH
1 lb/ft = 1.4882 kg/m	1 kg/m = 0.6720 lb/ft

VOLUME
1 inch³ = 16.387 cm³	1 cm³ = 0.610 inches
1 foot³ = 0.02832 m³	1 dm³ = 0.0353 cubic feet
1 fluid oz = 28.41 millimetres	1 m³ = 1.3080 cubic yards
1 pint = 0.5683 litre	1 litre = 1.76 pints
1 gallon = 4.5461 litres	1 hectolitre = 21.997 gallons

VELOCITY
1 ft/min = 5.08 mm/sec	1mm/sec = 0.19685 feet/min
1 mile/hour = 1.609334	1km/hour = 0.621371 miles/hour

STRESS
1 lbf/in² = 0.006895 N/m²	1 N/m² = 145.038 lbf/in²
1 ton/in² = 15.444 Nm²	1 N/mm² = 0.6350 tonf/in²

DENSITY
1 lb/ft³ = 16.085 kg/m³	1 kg/m³ = 0.062428 lb/ft³
1 lb/gallon = 0.099766gcm³	1 g/cm³ = 10.0224 lb/gallon

PRESSURE
1 in H2O = 1.868 mm HG	1 mm HG = 0.5352 in H2O
1 bar = 0.9869 atm	1 atm = 1.013 bar
1 lbf/ft² = 47.88 N/m²	1 N/m² = 0.02089 lbf/ft²

FLOW RATES
1 gall/min = 0.2728 m³/hour	1 m³/hour = 3.666 gallons/min
1 ft/min = 0.4719 litre/sec	1 litre/sec = 2.119 ft³/minute

SECOND MOMENT OF AREA
1 inch4 = 41.623 cm4	1 cm4 = 0.024025 in4
1 foot4 = 8..631 x 10-³ m4	1 m4 = 115.86 ft4

TORQUE
1 lb in = 0.1130 N m	1 N m = 8.851 lb ft
1 lgt ft = 0.1383 kg f m	1 kgf m = 7.233 lb ft

ENERGY
1 BTU = 1.0551 kj	1 kj = 0.9478 BTU
1 Hp/Hr = 0.7457 kw h	1 kw h = 1.3410 Hp
1 ft/lbf = 0.3238 Calories	1 Cal = 3.0880 ft lb

FORCE
1 lb f = 4.448 N	1 N = 0.2248 lb f
1 ton f = 9.964 kn	1 kn = 0.1004 ton f

Mitre Guide

BSEN 10025-2:2004 HOT ROLLED PRODUCTS OF NON-ALLOY STRUCTURAL STEELS

Grade	(BS4360)		Ladle analysis (% max.)
		C <=16	>16 <=40	>40	Si	Mn	P	S	N	Cu
S235JR	40B	.0170	0.170	0.200	-	1.400	0.035	0.035	0.012	0.550
S235JO	40C	.0170	.0170	.0170	-	1.400	0.030	0.030	0.012	0.055
S235J2	40D	.0170	.0170	.0170	-
S275JR	43B	0.210	0.210	0.220	-	1.500	0.035	0.035	0.012	0.550
S275JO	43C	0.18	0.18	0.18	-	1.500	0.030	0.030	0.012	0.550
S275J2	43D	0.18	0.18	0.18		1.500	0.030	0.030	0.012	0.550
S355JR	50B	0.240	0.240	0.240	0.550	1.600	0.035	0.035	0.012	0.550
S355JO	50C	0.200	0.200	0.220	0.550	1.600	0.030	0.030	0.012	0.550
S355J2	50D	0.200	0.200	0.220	0.550	1.600	0.025	0.025	-	0.550
S355K2	50D	0.200	0.200	0.220	0.550	1.600	0.025	0.025	-	0.550
S450		0.200	0.200	0.220	0.550	1.700	0.030	0.030	0.025	0.550

Grade	(BS4360)	Minimum yield strength (N/mm²)
		<=16	>16<=40	>40<=63	>63<=80	>80<=100	>100<=150	>150<=200	>200<=250
S235JR	40B	235	225	215	215	215	195	185	175
S235JO	40C	235	225	215	215	215	195	185	175
S235J2	40D	235	225	215	215	215	195	185	175
S275JR	43B	275	265	255	245	235	225	215	205
S275JO	43C	275	265	255	245	235	225	215	205
S275J2	43D	275	265	255	245	235	225	215	205
S355JR	50B	335	345	335	325	315	295	285	275
S355JO	50C	335	345	335	325	315	295	285	275
S355J2	50D	335	345	335	325	315	295	285	275
S355K2		335	345	335	325	315	295	285	275
S450JO		45	430	410	390	380	380

Grade	(BS4360)	Tensile strength (N/mm2)
		<3	>=3<=100	>100<=150	>150<=250
S235JR	40B	360-510	360-510	350-500	340-490
S235JO	40C	360-510	360-510	350-500	340-490
S235J2	40D	360-510	360-510	350-500	340-490
S275JR	43B	430-580	410-560	400-540	380-540
S275JO	43C	430-580	410-560	400-540	380-540
S275J2	43D	430-580	410-560	400-540	380-540
S355JR	50B	510-680	490-630	470-630	450-630
S355JO	50C	510-680	490-630	470-630	450-630
S355J2	50D	510-680	490-630	470-630	450-630
S355K2		510-680	490-630	470-630	450-630
S450JO			550-720	530-700

Grade	(BS4360)	Impact (J)
		oC	<=150	>150<=250	>250<=400
S235JR	40B	20	27	27	-
S235JO	40C	0	27	27	-
S235J2	40D	-20	27	27	27
S275JR	43B	20	27	27	-
S275JO	43C	0	27	27	27
S275J2	43D	-20	27	27	27
S355JR	50B	20	27	27	-
S355JO	50C	0	27	27	-
S355J2	50D	-20	27	27	27
S355K2		-20	40	33	33
S450JO		0	27	-	-

Grade	(BS4360)	Elongation (%)
		>=3<=40	>40<=63	>63<=100	>100<=150	>150<=250
S235JR	40B	26	25	24	22	21
S235JO	40C	26	25	24	22	21
S235J2	40D	26	25	24	22	21
S275JR	43B	23	22	21	19	19
S275JO	43C	23	22	21	19	19
S275J2	43D	23	22	21	19	19
S355JR	50B	22	21	20	18	17
S355JO	50C	20	21	20	18	17
S355J2	50D	20	21	20	18	17
S355K2		20	21	20	18	17
S450JO		17	17	17	17

BSEN 10058:2003 HOT ROLLED FLAT – STEEL BARS FOR GENERAL PURPOSES Width ‘b’

Width (mm)	Tolerance (mm)
10<=b<=40	+/-0.75
40<=b<=80	+/-1.00
80<=b<=100	+/-1.50
100<=b<=120	+/-2.00
120<=b<=150	+/-2.50

Thickness‘t’

Thickness (mm)	Tolerance (mm)
t<=20	+/-0.5
20<t<=40	+/-1.0
40<t<=80	+/-1.5

Straightness ‘q’

Cross-Section	Tolerance on Length L(mm)
<1000mm²	<=0.40% L
=>1000mm²	<=0.25% L

Out of Section

Thickness (mm)	Tolerance (mm)
10<=t<=25	0.5
25<t<=40	1.0
40<t<=80	1.5

BSEN 10059:2003 HOT ROLLED SQUARE STEEL BARS FOR GENERAL PURPOSES Square a

Square (mm)	Tolerance (mm)
8 – 14	+/-0.4
15 – 25	+/-0.5
26 – 35	+/-0.6
40 – 50	+/-0.8
55 – 90	+/-1.0
100	+/-1.3
110 – 120	+/-1.5
130 - 150	+/-1.8

Corner Radius ‘r’

Square (mm)	Tolerance (mm) (max.)
8<=a<=12	r<=1
12<=a<=20	r<=1.5
20<=a<=30	r<=2.0
30<=a<=50	r<=2.5
50<=a<=100	r<=3.0
100<=a<=150	r<=4.0

Straightness ‘q’

Cross-Section	Tolerance on Length L(mm)
<1000mm2	<=0.40% L
=>1000mm2	<=0.25% L

Out of Section ‘u’

Thickness (mm)	Tolerance (mm)
10<=t<=25	0.5
25<t<=40	1.0
40<t<=80	1.5

BSEN 10060:2003 HOT ROLLED SQUARE – STEEL BARS FOR GENERAL PURPOSES Diameter‘d’

Diameter (mm)	Tolerance (mm)
10 – 15	+-0.4
16 – 25	+-0.5
26 – 35	+-0.6
36 – 50	+-0.8
50 – 80	+-1.0
85 – 100	+-1.3
105 – 120	+-1.5
125 – 160	+-2.0
165 – 200	+-2.5
220	+-3.0
250	+-4.0
>250	+-6.0

Straightness ‘q’

Diameter (mm)	Tolerance on Length L(mm)
d<=25	not fixed
25<d<=80	q<=0.40% L
80<d<=250	q<=0.25% L

Ovality
The deviation from roundness shall not exceed 75% of the tolerances range given for size tolerance.
BSEN 10056-2:1993 STRUCTURAL STEEL – EQUAL & UNEQUAL LEG ANGLES Leg Length ‘a’

Leg Length ‘a’ (mm)	Tolerance (mm)
a<=50	+/-1.0
50<a<=100	+/-2.0
100<a<=150	+/-3.0
150<a<=200	+/-4.0
a>200	+6.0/-4.0

Leg Thickness‘t’

Thickness (mm)	Tolerance (mm)
t<=5	+/-0.50
5<t<=10	+/-0.75
10<t<=15	+/-1.00
t=>15	+/-1.20

Out of Square ‘k’

Leg Length ‘a’ (mm)	Tolerance (mm)
a<=100	1
100<a<=1500	1.5
150<a<=200	2
a>200	3

Straightness ‘q’

Leg Length ‘a’ (mm)	Tolerance Over Full Bar Length (mm)
a<=150	0.4% L
150<a<=200	0.2% L
a>200	0.1% L

BSEN 10219-1:2006 COLD FORMED WELDED STRUCTURAL HOLLOW SECTIONS OF NON-ALLOY & FINE GRAIN STEELS – PART 1 – TECHNICAL DELIVERY REQUIREMENTS
CHEMICAL COMPOSITION – LADLE ANALYSIS FOR PRODUCT THICKNESS <=40MM (% MAX.)

Designation	C	Si	Mn	P	S	Nb	V	Al total~	Ti	Cr	Ni	Mo	Cu	N*
S235JRH	0.17	-	1.4	0.045	0.045	-	-	-	-	-	-	-	-	0.009
S275J2H	0.2	-	1.5	0.035	0.035	-	-	-	-	-	-	-	-	-
S275JOH	0.2	-	1.5	0.04	0.04	-	-	-	-	-	-	-	-	0.009
S275MH	0.13	0.5	1.5	0.035	0.03	0.05	0.08	0.02	0.05	-	0.3	0.2	-	0.02
S275MLH	0.13	0.5	1.5	0.03	0.025	0.05	0.08	0.02	0.05	-	0.3	0.2	-	0.02
S275NH	0.2	0.4	0.50-1.40	0.035	0.03	0.05	0.05	0.02	0.03	0.3	0.3	0.1	0.35	0.015
S275NLH	0.2	0.4	0.50-1.40	0.03	0.025	0.05	0.05	0.02	0.03	0.3	0.3	0.1	0.35	0.015
S355J2H	0.22	0.55	1.6	0.035	0.035	-	-	-	-	-	-	-	-	-
S355JOH	0.22	0.55	1.6	0.04	0.04	-	-	-	-	-	-	-	-	0.009
S3565K2H	0.22	0.55	1.6	0.03	0.03
S355MH	0.14	0.5	1.5	0.035	0.03	0.05	0.1	0.02	0.05	-	0.3	0.2	-	0.02
S355MLH	0.14	0.5	1.5	0.03	0.025	0.05	0.1	0.02	0.05	-	0.3	0.2	-	0.02
S355NH	0.2	0.5	0.90-1.65	0.35	0.03	0.05	0.12	0.02	0.03	0.03	0.5	0.1	0.35	0.015
S355NLH	0.18	0.5	0.90-1.65	0.03	0.025	0.05	0.12	0.02	0.03	0.3	0.5	0.1	0.35	0.015
S420MH	0.16	0.5	1.7	0.035	0.03	0.05	0.12	0.02	0.05	-	0.3	0.2	-	0.02
S420MLH	0.16	0.5	1.7	0.03	0.025	0.05	0.12	0.02	0.05	-	0.3	0.2	-	0.02
S460MH	0.16	0.6	1.7	0.035	0.03	0.05	0.12	0.02	0.05	-	0.3	0.2	-	0.025
S460MLH	0.16	0.6	1.7	0.03	0.025	0.05	0.12	0.02	0.05	-	0.3	0.2	-	0.025
S460NH	0.2	0.6	1.00-1.70	0.035	0.03	0.05	0.2	0.02	0.03	0.3	0.8	0.1	0.7	0.025
S460NLH	0.2	0.6	1.00-1.70	0.03	0.025	0.05	0.2	0.02	0.03	0.3	0.8	0.1	0.7	0.025

*The maximum value for nitrogen does not apply if the chemical composition shows a minimum total AL content of 0.020% with a minimum AL/N ratio of 2:1, or if sufficient other N binding elements are present. N binding elements shall be recorded in the inspection document.
~If sufficient N binding elements are present, the minimum total AL content does not apply.


MECHANICAL PROPERTIES FOR NON-ALLOY STRUCTURAL HOLLOW SECTION

Designation	Min. Yield N/mm2		Tensile strength (N/mm2)		Min. Elongation long.	Impact properties#
	Nominal thickness (mm)		Nominal thickness (mm)		Nominal thickness (mm)	Test temp. Deg C	Min avg absorbed on standard test piece energy (J)
	<=16	>16<=40	<3	=>3<=40	<=40
S235JRH	235	225	360-510	340-470	26	20	27
S275J2H	275	265	430-580	410-560	22	-20	27
S275JOH	275	265	430-580	410-560	22	0	27
S275MH	275	265	370-540	370-540	24	-20	40
S275MLH	275	265	370-540	370-540	24	-50	27
S275NH	275	265	370-540	370-540	24	-20	40
S275NLH	275	265	370-540	370-540	24	-50	27
S355J2H	355	345	510-680	490-630	22	-20	27
S355JOH	355	345	510-680	490-630	22	0	27
S3565K2H	355	345	510-680	470-630	20	-20	27
S355MH	355	345	470-630	470-630	22	-20	40
S355MLH	355	345	470-630	470-630	22	-50	27
S355NH	355	345	470-630	470-630	22	-20	40
S355NLH	355	345	470-630	470-630	22	-50	27
S420MH	420	400	500-660	500-660	19	-20	40
S420MLH	420	400	500-660	500-660	19	-50	27
S460MH	460	440	550-720	550-720	17	-20	40
S460MLH	460	440	550-720	550-720	17	-50	27
S460NH	460	440	550-720	550-720	17	-20	40
S460NLH	460	440	550-720	550-720	17	-50	27

# Impact tests are not required for nominal thickness <6mm


BSEN 10219-1:2006 COLD FORMED WELDED STRUCTURAL HOLLOW SECTIONS OF NON ALLOY & FINE GRAIN STEELS – PART 2 – TOLERANCES, DIMENSIONS & SECTIONAL PROPERTIES

Characteristic	Circular Hollow Section	Square & Rectangular Hollow Sections
Outside dimensions (H,B,D)	+/-1% with a min. of +/-0.5mm and a max. of +/-10mm	Side Length	Tolerance
		H,B<100 100<=H,B<=200 H,B>200	+/-1% with a min. of +/-0.5mm +/-0.8% +/-0.6%
Thickness ‘t’	D<=406.4mm T<=5mm +/-10% T>5mm +/-0.50mm   For D>406.4mm +/-10% with max. of +/-2mm	T<=5mm +/-10% T>5mm+/-0.50mm

Characteristic	Circular Hollow Section	Square & Rectangular Hollow Sections
Out of roundness   Concavity/Convexity Squareness of side Twist Straightness Mass	2% for hollow sections having a diameter to thickness ratio not exceeding 100 N/A N/A N/A 0.20% of total length & 3mm over 1m lengths +/-6% on individual lengths	N/a   Max. 0.8% with a min. of 0.5mm 90 degrees +/- 1 degree 2mm pluis 0.5mm/m length 0.15% of total length & 3mm over 1m lengths +/-6% on individual lengths

External Corner Profile

Thickness ‘T’ (mm)	External Corner Profile
T<=6	1.6T to 2.4T
6<t<=10	2.0T to 3.0T
10<T	2.4T to 3.6T

Weld Bead Height

Thickness ‘T’ (mm)	Max. Weld Bead Height (mm)
<= 14.2	3.5
>14.2	4.8

BSEN 10210:2006 HOT FINISHED STRUCTURAL HOLLOW SECTIONS OF NON-ALLOY & FINE GRAIN STEELS – PART 1 – TECHNICAL DELIVERY REQUIREMENTS

Chemical Composition – Ladle Analysis for Product Thickness <=65mm (% max.)

Designation	C Nominal thick. (mm)		Si	Mn	P	S	Nb	V	Al total~	Ti	Cr	Ni	Mo	Cu	N*
	<=40	>40<=65
S235JRH	0.17	0.2	-	1.4	0.045	0.045	-	-	-	-	-	-	-	-	0.009
S275J2H	0.2	0.22	-	1.5	0.035	0.035	-	-	-	-	-	-	-	-	-
S275JOH	0.2	0.22	-	1.5	0.04	0.04	-	-	-	-	-	-	-	-	0.009
S275NH	0.2	0.2	0.4	0.50-1.40	0.03	0.03	0.05	0.05	0.02	0.3	0.3	0.3	0.1	0.35	0.015
S275NLH	0.2	0.2	0.4	0.50-1.40	0.025	0.025	0.05	0.05	0.02	0.3	0.3	0.3	0.1	0.35	0.015
S355J2H	0.22	0.22	0.55	1.6	0.035	0.035	-	-	-	-	-	-	-	-	-
S355JOH	0.22	0.22	0.55	1.6	0.04	0.04	-	-	-	-	-	-	-	-	0.009
S355K2H	0.22	0.22	0.55	1.6	0.03	0.03	-	-	-	-	-	-	-	-	-
S355NH	0.2	0.2	0.5	0.90-1.65	0.035	0.03	0.05	0.12	0.02	0.3	0.3	0.5	0.1	0.35	0.015
S355NLH	0.18	0.18	0.5	0.90-1.65	0.03	0.025	0.05	0.12	0.02	0.3	0.3	0.5	0.1	0.35	0.015
S460NH	0.2	0.2	0.5	1.00-1.70	0.035	0.03	0.05	0.2	0.02	0.3	0.3	0.8	0.1	0.7	0.025
S460NLH	0.2	0.2	0.5	1.00-1.70	0.03	0.025	0.05	0.2	0.02	0.3	0.3	0.8	0.1	0.7	0.025

*It is permissible to exceed the specified values provided that each increase of 0.001%N the P max content will be reduced by 0.005%, the N content of the ladle analysis, however, shall not be more than 0.012%. ~If sufficient N binding elements are present, the minimum total Al content does not apply.

Mechanical Properties for Non-Alloy Structural Steel Hollow Section

Designation	Min. yield N/mm2			Tensile strength (N/mm2)		Min. Elongation				Impact properties#
						Long.		Trans.		Test temp.   Deg C	Min. avg absorbed on standard test piece energy (J)
	Nominal thick. (mm)			Nominal thick. (mm)		Nominal thick. (mm)
	<=16	>16<=40	>40<=65	<3	=>3<=65	<=40	>40<=65	<40	>40<=65
S235JRH	235	225	215	360-510	340-470	26	25	24	23	20	27
S275J2H	275	265	255	430-580	410-560	22	21	20	19	-20	27
S275JOH	275	265	255	430-580	410-560	22	21	20	19	0	27
S275NH	275	265	255	370-540	370-540	24	24	22	22	-20	40
S275NLH	275	265	255	370-540	370-540	24	24	22	22	-50	27
S355J2H	355	345	335	510-680	490-630	22	21	20	19	-20	27
S355JOH	355	345	335	510-680	490-630	22	21	20	19	0	27
S355K2H	355	345	335	510-680	490-630	22	21	20	19	-20	40
S355NH	355	345	335	470-630	470-630	22	22	20	20	-20	40
S355NLH	355	345	335	470-630	470-630	22	22	20	20	-50	27
S460NH	460	440	430	550-720	550-720	17	17	15	15	-20	40
S460NLH	460	440	430	550-720	550-720	17	17	15	15	-50	27

# Impact tests are not required for nominal thickness <6mm


BSEN 10210-1:2006 HOT FINISHED WELDED STRUCTURAL HOLLOW SECTIONS OF NON-ALLOY & FINE GRAIN STEELS – PART2 – TOLERANCES, DIMENSIONS & SECTIONAL PROPERTIES

Characteristic	Circular Hollow Section	Square & Rectangular hollow Sections
Outside dimensions	+/-1% with a min. of +/-0.5mm and a max. of +/- 10mm	+/-1% with a min. of +/-0.5mm
Thickness	-10%*	-10%*
Out of roundness	2% for hollow sections having a diameter to thickness ratio not exceeding 100	N/A
Concavity/Convexity~	N/A	1%
Squareness of side	N/A	90 degrees +/- 1 degree
External corner profile	N/A	3 x thickness at each corner
Twist	N/A	2mm plus 0.5mm/m length
Straightness	0.2% of total length	0.2% of total length
Mass	+/-6% on individual lengths	+/-6% on individual lengths

*positive deviation is limited by tolerance on mass ~tolerance on concavity is independent of tolerance on outside dimensions

Weld Bead Height

Thickness ‘T’ (mm)	Max. Weld Bead Height (mm)
<= 14.2	3.5
>14.2	4.8

BS EN 10305 – STEEL TUBES FOR PRECISION APPLICATIONS – TECHNICAL DELIVERY CONDITIONS (ERW TUBE)

Chemical composition & Mechanical Properties

Designation EN10305	Ladle Analysis
	C max	Si max	Mn max	P max	S max
E155	0.11	0.35	0.7	0.025	0.025
E190	0.10	0.35	0.7	0.025	0.025
E195	0.15	0.35	0.7	0.025	0.025
E220	0.14	0.35	0.7	0.025	0.025
E235	0.17	0.35	1.2	0.025	0.025
E260	0.16	0.35	1.2	0.025	0.025
E275	0.21	0.35	1.4	0.025	0.025
E320	0.20	0.35	1.4	0.025	0.025
E355	0.22	0.55	1.6	0.025	0.025
E370	0.21	0.55	1.6	0.025	0.025
E420	0.16	0.50	1.7	0.025	0.025

Mechanical Properties
Yield~ (N/mm2)	Tensile (N/mm2)	A min (%)	Delivery condition*
-	290	15	CR1
190	270	26	CR2
-	330	8	CR1
220	310	23	CR2
-	390	7	CR1
260	340	21	CR2
-	440	6	CR1
320	410	19	CR2
-	540	5	CR1
370	450	15	CR2
420	490	12	CR2

*note different standard delivery condition linked to specific grade ~Depending on the degree of cold forming the strip material and sizing the as welded tube, the yield strength may nearly be as high as the tensile strength. For calculation purposes yield strength value of upper yield of >0.7 x tensile strength are recommended in the CR1 condition.

Welded & cold sized	CR1	Normally not heat treated, but suitable for final annealing
	CR2	Not intended for heat treatment after the welding and sizing process

TOLERENCES ON OUTSIDE DIAMETER & THICKNESS – (BSEN 10305-3:2002) ROUNDS CONDITIONS CR1 &CR2

Diameter D (mm)	Wall Thickness T (mm)	Tolerance (mm)
6<=D<=19	0.6 – 3.0	+/-0.12
19<=D<=30	0.6 – 3.5	+/-0.15
30<=D<=42.4	0.8 – 4.0	+/-0.20
42.4<=D<=51	1.0 – 4.5	+/-0.25
51<=D<=63.5	1.2 – 5.0	+/-0.30
63.5<=D<=76	1.2 – 5.5	+/-0.35
76<=D<=90	1.5 – 6.0	+/-0.40
90<=D<=101.6	1.5 – 6.0	+/-0.50
101.6<=D<=120	1.8 – 6.0	+/-0.60
120<=D<=139.7	1.8 – 6.0	+/-0.80
139.7<=D<=193.7	1.8 – 6.0	+/-1.00

Straightness ‘e’ over Length ‘L’ (mm)    D=>15mm 0.002xL Deviation in ‘e’ over 1mm shall not exceed 3.0mm

TOLERANCES ON LENGTH OF SIDE (BSEN 10305-3:2002) SQUARES & RECTANGLES CONDITIONS CR1 & CR2

Largest length of side H (mm)	Tolerance (mm)
15<=H<=20	+/-0.20
20<= H <=35	+/-0.25
35<= H <=50	+/-0.30
50<= H <=60	+/-0.35
60<= H <=70	+/-0.40
70<= H <=80	+/-0.50
80<= H <=90	+/-0.60
90<= H <=100	+/-0.65
100<= H <=120	+/-0.70

Tolerance applies to each side length but largest length of side ‘H’ defines the tolerance H = longest length side                                          B = shortest length side Tolerance of thickness ‘T’ (mm) T<=15          +/- 0.15 T>1.5           +/-0.1 T or +/-0.35mm which ever is smaller Tolerance in corner profile ‘C’ (mm) T<=2.5                                1.5T 2.5<T<=40                       2.2T Straightness ‘e’ over Length ‘L’ (mm) H<=30         0.0025 x L H>30            0.0015 x L Deviation in ‘e’ over 1m shall not exceed 3.0mm
Twist 'V’ Maximum twist shall be: H or B<=30mm H or B > 3.0mm H/10 or B/10


BSEN 1387:1985 SCREWED & SOCKETED STEEL TUBES & TUBULARS & FOR PLAIN ENDS STEEL TUBES FOR WELDING OR FOR SCREWING TO BS1 PIPE THREADS

GRADES	Light, Medium & Heavy
FINISHES	Material can be supplied self colour, painted, varnished and also with ends either plain or screwed and socketed.
CHEMICAL COMPOSITION	C – 0.20%  Mn – 1.20%  P – 0.045%  S – 0.045%
MECHANICAL PROPERTIES	Yield (min)  195 N/mm≤ Tensile         320-460 N/mm≤ Elongation   20%
SIZE	The nominal size is the numerical designation of size which is common to all components in the piping system and is only loosely related to the actual sizes. In case of nominal bore tube it roughly relates to the bore.
TESTING	Tubes are subject to tensile, bend & flattening tests and are leak tested to 50bar or alternatively subjected to eddy current test.

BSEN 10024:1995 HOT ROLLED TAPER FLANGE I SECTIONS (Joists) Section Height ‘h’

Height (mm)	Tolerance (mm)
h <= 200	+/-2.0
200<h<=400	+/-3.0
h>400	+/-4.0

Flange Thickness ‘t’

Thickness (mm)	Tolerance (mm)
t<=7	+1.5/-0.5
7<t<=10	+2.0/-1.0
10<t<=20	+2.5/-1.5
t>20	+2.5/-2.0

Out of Square (k + k1)

Flange Width ‘b’ (mm)	Tolerance (mm)
b<=100	2
b>100	2% of b

Web thickness‘s’

Thickness (mm)	Tolerance (mm)
s<7	+0.5/-1.0
7<s<=10	+0.7/-1.5
s>10	+1.0/-2.0

Flange Width ‘b’

Width (mm)	Tolerance (mm)
b<=75	+/-1.5
75<b<=100	+/-2.0
100<b<=125	+/-2.5
b>125	+/-3.0

Web off Centre ‘e’

Flange width ‘b’ (mm)	Tolerance (mm) ‘e’ where e = (b1-b2)/2
b<=100	2
b>100	3

Straightness (qxx and qyy)

Second height ‘h’ (mm)	Tolerance on length ‘L’ (mm)
80<h<180	0.30 %L
180<h<=360	0.15 %L
h>360	0.10 %L

BSEN 10034:19936 STRUCTURAL STEEL I & H SECTIONS Section Height ‘h’

Height (mm)	Tolerance (mm)
h <= 180	+3.0/-2.0
180<h<=400	+4.0/-3.0
400<h<=700	+5.0/-3.0
h>700	+5.0/-5.0

Flange Thickness’t’

Thickness (mm)	Tolerance (mm)
t<=6.5	+1.5/-0.5
6.5<t<=10	+2.0/-1.0
10<t<=20	+2.5/-1.5
20<t<=30	+2.5/-2.0
30<t<=40	+2.5/-2.5
40<t<=60	+3.0/-3.0
t=>60	+4.0/-4.0

Out of Square (k + k1)

Flange Width ‘b’ (mm)	Tolerance (mm)
b<=110	1.5
b>110	2% of b (max 6.5mm)

Web thickness‘s’

Thickness (mm)	Tolerance (mm)
s<7	+/-0.7
7<s<=10	+/-1.0
10<s<=20	+/-1.5
20<s<=40	+/-2.0
40<s<=60	+/-2.5
s>60	+/-3.0

Flange Width ‘b’

Width (mm)	Tolerance (mm)
b<=110	+4.0/-1.0
110<b<=210	+4.0/-2.0
210<b<=325	+4.0/-4.0
b>325	+6.0/-5.0

Web off Centre ‘e’

Flange width ‘b’ (mm)	Tolerance (mm) ‘e’ where e = (b1-b2)/2
t<40
&  b<= 110	2.5
& 110<b<=235	3.5
&  b>325	5
t=>40
&  110<b<=325	5
& b>325	8

Straightness (qxx and qyy)

Second height ‘h’ (mm)	Tolerance on length ‘L’ (mm)
80<h<180	0.30 %L
180<h<=360	0.15 %L
h>360	0.10 %L

BSEN 10279:2000 HOT ROLLED STEEL CHANNELS Section Height ‘h’

Height (mm)	Tolerance (mm)
h <= 65	+/-1.5
65<h<=200	+/-2.0
200<h<=400	+/-3.0
h>400	+/-4.0

Web Thickness‘s’

Thickness (mm)	Tolerance (mm)
s<=10	+/-0.5
10<s<=15	+/-0.7
s>15	+/-1.0

Flange Width ‘b’

Width (mm)	Tolerance(mm)
b<=50	+/-1.5
50<b<=100	+/-2.0
100<b<=125	+/-2.5
b>125	+/-3.0

Flange Thickness ‘t’

Thickness (mm)	Tolerance (mm)
t<=10	a/-0.5
10<t<=15	a/-1.0
t>15	a/-1.5

Mass/Unit Length (kg/m)

Range (mm)	Tolerance (mm)
h<=125	+/-6%
h>125	+/-4%

Out of Square (k + k1)

Flange Width ‘b’ (mm)	Tolerance (mm)
b<=100	2
b>100	2.5% of b

Out of Flatness (f)

Range (mm)	Tolerance (mm)
h<=100	+/-0.5
100<h<=200	+/-1.0
200<h<=400	+/-1.5
h>400	+/-1.5

Heel Radius ‘r’

Range	Tolerance (mm)
All sizes	<=0.3t

Straightness

	Section Height ‘h’ (mm)	Tolerance on Length ‘L’ (mm)
qxx	h<150	0.30 %L
	180<h<=360	0.15 %L
	h>360	0.10 %L
qyy	h<150	0.50 %L
	180<h<=360	0.30 %L
	h>360	0.20 %L

BSEN 10051:1992 CONTINUOUSLY HOT ROLLED UNCOATED PLATE, SHEET & STRIP OF NON-ALLOY STEELS – TOLERANCES ON DIMENSIONS & SHAPE

Tolerances on thickness for Sheet/Plate made of Steels with a normal Deformation of Elevated Temperatures

Nominal Thickness (mm)	Tolerances or nominal width (mm)
	<=1200	>1200<=1500	>1500<=1800	>1800
<=2.00	+/-0.17	+/-0.19	+/-0.21	-
>2.00<=2.50	+/-0.18	+/-0.21	+/-0.23	+/-0.25
>2.50<=3.00	+/-0.20	+/-0.22	+/-0.24	+/-0.26
>3.00<=4.00	+/-0.22	+/-0.24	+/-0.26	+/-0.27
>4.00<=5.00	+/-0.24	+/-0.26	+/-0.28	+/-0.29
>5.00<=6.00	+/-0.26	+/-0.28	+/-0.29	+/-0.31
>6.00<=8.00	+/-0.29	+/-0.30	+/-0.31	+/-0.35
>8.00<=10.00	+/-0.32	+/-0.33	+/-0.34	+/-0.40
>10.00<=12.50	+/-0.35	+/-0.36	+/-0.37	+/-0.43
>12.50<=15.00	+/-0.37	+/-0.38	+/-0.40	+/-0.46
>15.00<=25.00	+/-0.40	+/-0.42	+/-0.45	+/-0.50

Tolerances on Length ‘L’

Nominal length (mm)	Tolerances (mm) Lower	Tolerances (mm) Upper
<2000	0	+10
>=2000<=1500	0	+0.005 x L
>=8000	0	+40

  Tolerances on width of Sheet/Plate

Nominal width (mm)	Tolerances (mm) Mill Edges	Trimmed Edges
<=1200	-0/+20	-0/+3
>1200<=1500	-0/+20	-0/+5
>1500	-0/+20	-0/+6

 

Tolerances on flatness for Steels with Normal Deformation Resistances at elevated Temperatures (Dimensions in mm)

Nominal Thickness	Nominal Width	Tolerances on flatness	Special tolerances on flatness
<=2.00	<=1200	18	9
	>1200<=1500	20	10
	>1500	25	13
>2.00<=25	<=1200	15	8
	>1200<=1500	18	9
	>1500	23	12

BS 1449 STEEL PLATE, SHEET & STRIP
Based on Formability

Grade	Quality	Chemical composition
		C	Mn	S	P
HR1	Extra deep drawing Al killed steel	0.08	0.45	0.03	0.03
HR2	Extra deep drawing	0.08	0.45	0.04	0.03
HR3	Deep drawing	0.10	0.50	0.04	0.04
HR4	Drawing or forming	0.12	0.60	0.05	0.05
HR14	Flanging	0.15	0.60	0.05	0.05
HR15	Commercial	0.20	0.90	0.05	0.06

Mechanical properties
Yield (N/mm2) (min)	Tensile (N/mm2)	Elong (A80%)	Band mandrel diameter (mm)
			180 degrees
			T<3mm	3<=T<10mm	10<=T
170	290	32	0T	0T	-
170	290	32	0T	0T	-

Based on minimum strengths

Grade	Quality	Chemical composition
		C	Mn	S	P
HR34/20	Carbon – manganese steel	0.15	1.20	0.050	0.050
HR37/23	Carbon – manganese steel	0.20	1.20	0.050	0.050
HR43/25	Carbon – manganese steel	0.25	1.20	0.050	0.050
HR50/35	Carbon – manganese steel	0.20	1.50	0.050	0.050
HR40/40	Micro-alloyed steels	0.15	1.20	0.040	0.040
HR43/35	Micro-alloyed steels	0.15	1.20	0.040	0.040
HR46/40	Micro-alloyed steels	0.15	1.20	0.040	0.040
HR50/45	Micro-alloyed steels	0.20	1.20	0.040	0.040
HR40F30	Micro-alloyed steels	0.12	1.20	0.035	0.035
HR43F35	Micro-alloyed steels	0.12	1.20	0.035	0.035
HR46F40	Micro-alloyed steels	0.12	1.20	0.035	0.035
HR50F45	Micro-alloyed steels	0.12	1.20	0.035	0.035

Mechanical properties
Yield (N/mm2) (min)	Tensile (N/mm2)	Elong (A80%)	Band mandrel diameter (mm)
			180 degrees
			All thickness ranges
200	340	(27)	2T
230	370	(26)	2T
250	430	(23)	3T
350	500	(18)	3T
300	400	(24)	2T
350	430	(21)	2T
400	460	(18)	3T
450	500	(18)	3T
300	400	(26)	0.5T
350	430	(23)	0.5T
400	460	(20)	1T
450	500	(20)	1.5T

Items in brackets are for guidance only


BSEN 10130:1999 COLD-ROLLED LOW CARBON STEEL FLAT PRODUCTS FOR COLD FORMING – TECHNICAL DELIVERY CONDITIONS & BSEN 10131:1991 COLD-ROLLED UNCOATED LOW CARBON & HIGH YIELDED STRENGTH STEEL FLAT PRODUCTS FOR COLD FORMING – TOLERANCE ON DIMENSION & SHAPE

Technical Delivery

Grade	Definition	Validity of mechanical properties	Chemical composition (%max)					Mechanical properties*
	C		P	S	Mn	Ti	Yield (n/mm2)(min)	Tensile (N/mm2)	Elong (A80%)	r90 (min)
DC01	Non-alloy quality steel	-	0.12	0.045	0.045	0.06	-	140	270/410	28	-
DC03	Non-alloy quality steel	6 months	0.10	0.035	0.035	0.45	-	140	270/370	34	1.3
DC04	Non-alloy quality steel	6 months	0.08	0.030	0.030	0.40	-	140	270/350	38	1.6
DC05	Non-alloy quality steel	6 months	0.06	0.025	0.025	0.35	-	140	270/350	40	1.9
DC06	Alloy quality steel	6 months	0.02	0.020	0.020	0.25	0.3	120	270/350	38	1.8

*mechanical properties only apply to skin passed products

Tolerances on Thickness

Nominal Thickness	Nominal tolerances (mm) for Nominal Width of:-
	<=1200	>1200<=1500	>1500
=>0.35<=0.40	+/-0.04	+/-0.05	-
=>0.40<=0.60	+/-0.05	+/-0.06	+/-0.07
=>0.60<=0.80	+/-0.06	+/-0.07	+/-0.08
=>0.80<=1.00	+/-0.07	+/-0.08	+/-0.09
=>1.00<=1.20	+/-0.08	+/-0.09	+/-0.10
=>1.20<=1.60	+/-0.10	+/-0.11	+/-0.11
=>1.60<=2.00	+/-0.12	+/-0.13	+/-0.13
=>2.00<=2.50	+/-0.14	+/-0.15	+/-0.15
=>2.50<=3.00	+/-0.16	+/-0.17	+/-0.17

  Tolerances on Width of Sheet and Wide Strip

Nominal Width (mm)	Normal Tolerances (mm)	Special Tolerances (mm)
<=1200	-0/+4.0	-0/+2.0
>1200<=1500	-0/+5.0	-0/+2.0
>1500	-0/+6.0	-0/+3.0

Flatness Tolerances for Low Carbon Steel Sheet

Tolerance Class	Nominal Width (mm)	Nominal Thickness (mm)
		<0.7	=>0.7<1.2	=>1.2
Normal	=>600<1200	15	13	10
	=>1200<1500	18	15	13
	=>1500	22	20	19
Special	=>600<1200	8	6	5
	=>1200<1500	9	8	6
	=>1500	12	10	9

Tolerances on Length

Nominal Width (mm)	Normal Tolerances (mm)
<2000	0	6
>2000	0	0.3% of length

Nominal Width (mm)	Special Tolerances (mm)
<2000	0	3
>2000	0	0.15% of length

BSEN 10029:1991 TOLERANCES ON DIEMNSIONS, SHAPE & MASS FOR HOT ROLLED STEEL PLATES 3mm THICK & OR ABOVE

Tolerances on the Nominal Thickness (mm)

Nominal Thickness (mm)	Class A		Class B		Class C		Class D
	Lower	Upper	Lower	Upper	Lower	Upper	Lower	Upper
>=3<5	-0.4	+0.3	-0.3	+0.9	-0	+1.2	-0.6	-0.6
>=5<8	-0.4	+0.3	-0.3	+1.2	-0	+1.5	-0.75	-0.75
>=8<15	-0.5	+0.3	-0.3	+1.4	-0	+1.7	-0.85	-0.85
>=15<25	-0.6	+0.3	-0.3	+1.6	-0	+1.9	-0.95	-0.95
>=25<40	-0.8	+0.3	-0.3	+1.9	-0	+2.2	-1.1	-1.1
>=40<80	-1.0	+0.3	-0.3	+2.5	-0	+2.8