铸铁材质标准
Gray lron 灰铸铁
Standard-Spec.No.&Class 标
准
T.S.
σb≥
N/mm
2
Hardness
HB≤
Note:(1)Test Bar θ=30mm(2)Chemieal composition
and other requirement can be established upon
written agreement between manufacturer and
purchaser.(3)The hardness values are for castings
of 15~30mm thickness.
注: (1)试棒直径 =30mm;(2) 化学成分和其它要求可与
客户商定; (3)硬度值适用于 15-30mm 壁厚铸件
GB
China/ISO
JIS
JAPAN
ASTM
U.S.A.
HT20