Cast iron is an alloy consisting of iron and 5 main attendant elements C, Si, Mn, P and S. The element C and Si have got the most important influence on the ultimate tensile strength and Brinell hardness (HBW). The higher the C and Si content, the higher are the values of Rm and HB. Mn, P and S have got a minor influence.
Chemical analysis of gray cast iron(mass fraction)（%）for q reference:
|
Material No. |
Wall thickness /mm |
C |
Si |
Mn |
P ≤ |
S ≤ |
|
HT-100 |
- |
3.3~3.8 |
2.1~2.7 |
0.5~0.8 |
0.3 |
0.15 |
|
HT-150 |
15~30 30~50 >50 |
3.3~3.7 3.1 ~3.5 3.0~3.4 |
2.0~2.4 2.3~2.3 1.9~2.2 1.8~2.1 |
0.5~0.8 |
0.2 |
0.12 |
|
HT-200 |
<15 15~30 30~50 >50 |
3.2~3.6 3.1~3.5 3.0~3.4 3.0~3.2 |
1.9~2.2 1.5~1.8 1.4~1.7 |
0.6~0.9 0.8~1.0 0.8~1.0 |
0.15 |
0.12 |
|
HT-250 |
<15 15~30 30~50 >50 |
3.2~3.5 3.1~3.4 3.0~3.3 2.9~3.2 |
1.8~2.1 1.6~1.9 1.5~1.8 1.4~1.7 |
0.7~0.9 0.8~1.0 0.8~1.0 0.9~1.1 |
0.15 |
0.12 |
|
HT-300 |
<15 15~30 30~50 >50 |
3.1~3.5 3.0~3.3 2.8~3.1 |
1.5~1.8 1.4~1.7 1.3~1.6 |
0.8~1.0 0.8~1.0 0.9~1.1 1.0~1.2 |
0.15 |
0.12 |
|
HT-350 |
<15 15~30 30~50 >50 |
2.9~3.2 2.8~3.1 2.8~3.1 2.7~3.0 |
1.4~1.7 1.3~1.6 1.2~1.5 1.1~1.4 |
0.9~1.2 1.0~1.3 1.0~1.3 1.1~1.4 |
0.15 |
0.12 |
