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Grade HT250
Corresponding Standard GB /T 9439-2010
Grey Iron Castings
Classification cast Iron
HT250 Mechanical Properties
Sample size Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
φ30 (single-cast) 250~350 165~228 0.3~0.8
5＜t≤300 (single-cast) ≥250 180~250
20＜t≤40 (additional casting) ≥210
40＜t≤80 (additional casting) ≥190
80＜t≤150 (additional casting) ≥170
150＜t≤300 (additional casting) ≥160
5＜t≤10 (base material) ≥250
10＜t≤20 (base material) ≥225
20＜t≤40 (base material) ≥195
40＜t≤80 (base material) ≥170
80＜t≤150 (base material) ≥155
Approximate Comparison Table Cast Iron
China Taiwan, China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom Australia
GB CNS JIS ASTM SAE ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS Australian Standard AS
HT25-47
HT250 		FC250 FC250 250/275
35
35B
40
40B 		G11H20 250
JL250 		GG25 0.6025 FGL250
Ft25D 		EN-GJL-250 EN-JL1040 SCH25 01-25-00
0125 		250
260
Grade220
Grade260 		T260
HT250 Corresponding Standards(Same grade name, different standards)
1 GB /T 9439-2010
HT250
2 YB /T 036.2-1992
HT250

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