AH40 L35102 A40 - GB 712-2011

Grade	AH40
China ISC	L35102
Old Grade
Corresponding Standard	GB 712-2011 Ship and Ocean Engineering Structural Steel
Classification	Alloy Steel

AH40 Chemical Element Composition Content (%)

Component	C	Si	Mn ^ⓒ	P	S	Cr	Ni	Cu	Mo	Ti	V	Nb	Al ^ⓓ
Minimum Value	-	-	0.9	-	-	-	-	-	-	-	0.05	0.02	0.015
Maximum Value	0.18	0.5	1.6	0.03	0.03	0.2	0.4	0.35	0.08	0.02	0.1	0.05	-

AH40 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
510~660	ReH: ≥390	≥20	0°C t≤50mm long.: ≥41 tr.: ≥27

• t-thickness；long.-longitudual，tr.-transverse；ReH-upper yield strength
• When the yield is not obvious, Rp0.2 can be measured instead of the upper yield strength.

① Test temperature 0°C, impact absorbed energy KV2:
◎ t＞50~70mm，long.: ≥46J，tr.: ≥31J
◎ t＞70~150mm，long.: ≥55J，tr.: ≥37J

AH40 Corresponding Standards(Same grade name, different standards)

1	GB 712-2011
	AH40 L35102 (A40)
2	GB /T 9945-2012
	AH40 (A40)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!