420S29 EN56B - BS 970-4-1970

Grade	420S29
Old Grade
Corresponding Standard	BS 970-4-1970 Specification for Wrought steels in the form of blooms,billets,bars and forgings--Part 4:Valve steels
Classification	Martensitic Stainless Steel

420S29 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu ^◎	Mo ^◎
Minimum Value	0.14	-	-	-	-	11.5	-	-	-
Maximum Value	0.2	0.8	1	0.04	0.03	13.5	1	0.3	0.3

420S29 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
Steel, section≤152.4mm	Hardened + tempered (R)	696~853	≥490	≥529	≥15	201~255	Section ≤63.5mm Izod: ≥25ft·lbf Section＞63.5~≤152.4mm Izod: ≥20ft·lbf
Steell, section≤28.6mm	Hardened + tempered (S)	774~921	≥559	≥588	≥13	223~277	Section ≤28.6mm Izod: ≥20ft·lbf

• The letters P, R, S and T in the table indicate the range of tensile strength of quenched and tempered steels.

1 Approximate Comparison Table Martensitic Stainless Steel

2 Approximate Comparison Table Martensitic Heat-Resistant Steel

China		Taiwan, China	Japan	South Korea	International Organization for Standardization	Germany		United Kingdom
GB	ISC	CNS	JIS	KS	ISO	DIN EN/DIN	W-Nr.	BS EN/BS
13Cr13Mo (1Cr13Mo)	S45710	410J1	SUS 410J1	STS 410J1	X12CrMo 12-6	X15Cr 13	1.4024	420S29

3 Approximate Comparison Table Martensitic Heat-Resistant Steel

420S29 Corresponding Standards(Same grade name, different standards)

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