ASTM A283 steel equivalent grades

When mentioning ASTM A36, JIS G 3101 SS400, DIN 17100 ST37-2, EN 10025-2 S235JR, GB/T 700 Q235B and so on mild steel. A lot of insiders of steel industry will not strange. But do you know their relations to ASTM A283 steel, which also belong to mild steel? Actually they are ASTM A283 steel equivalent grades.

After checking their chemical composition and mechanical properties, you will know how they are equivalent?

ASTM A283 steel equivalent grades chemical composition:

Grade	C (t≤16mm)	Si	Mn	P	S	Cu	N
A283C	0.24 max	0.04 max	0.09 max	0.035 max	0.04 max	0.20 min	-
S235JR	0.19 max	-	1.5 max	0.045 max	0.045 max	0.60 max	0.014 max
SS400	-	-	-	0.50 max	0.50 max	-	-
ST37-2	0.21 max	-	-	0.065 max	0.065 max	-	0.010 max
Q235B	0.20 max	0.35 max	1.40 max	0.045 max	0.045 max	-	-
A36	0.26 max	0.40 max	-	0.04 max	0.05 max	0.20 min	-

ASTM A283 steel equivalent grades mechanical properties:

Grade	Yield strength ReH/(N/mm2)	Tensile strength Rm/(N/mm2) (3mm≤t≤16mm)	Elongation A/%	Charpy V test
Grade	(t≤16mm) min	Tensile strength Rm/(N/mm2) (3mm≤t≤16mm)	(3mm≤t≤40mm) min	Temperature/℃	Impact energy (Longitudinal)/J min
A283C	205	380-515	25	-	-
S235JR	235	360-510	26	20	27
SS400	245	400-500	21	-	-
ST37-2	235	360-510	26	20	27
Q235B	235	370-500	26	20	27
A36	250	400-550	23	-	-

All the ASTM A283 steel equivalent grades have close chemical composition and mechanical properties but not all the same. That suggests they can be used to replace in stead of each other on certain conditions. If you are hesitated which material to choose among ASTM A283 steel equivalent grades, please contact BBN steel and ask our technician approval.

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