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Grade 309C30
Corresponding Standard BS 3100-1991
Specification for Steel Castings for General Engineering Purposes
Classification Cast Steel
Properties Corrosion Resistance
309C30 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value - - - - - 22 10 -
Maximum Value 0.5 2.5 2 0.05 0.05 27 14 1.5
309C30 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Yield Point
σs
Elongation or Extension Rate
δ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
N or N+T or QQ+T or WQ+T 540~690 ≥320 ≥16 152~207 ≥30
1 Approximate Comparison Table Heat-Resistant Cast Steels and Alloys
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
ZG40Cr25Ni12Si2 C53881 SCH 13 SCH 13X HRSC 13 HHtypeⅡ J93503 GX40CrNiSi25-12 GX40CrNiSi25-12 1.4837 GX40CrNiSi25-12 ≈40Х24Н12СЛ 309C30
2 Approximate Comparison Table Heat-Resistant Cast Steels and Alloys
Japan United States Germany Russia United Kingdom
JIS ASTM UNS DIN EN/DIN W-Nr. GOST BS EN/BS
SCH13A
SCH17 		HH J93503 G-X40CrNiSi25 21 1.4837 40Х24Н12Л 309C30

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