国内阀门材料常用技术标准 灰铸铁件、铸件抗拉强度
牌 号 | 铸件厚度,mm |
最小抗拉强度 σb N/mm2(kgf/mm2) |
|
大 于 | 至 | ||
HT 100 | 2.5 | 10 | 130(13.3) |
10 | 20 | 100(10.2) | |
20 | 30 | 90(9.2) | |
30 | 50 | 80(8.2) | |
HT 150 | 2.5 | 10 | 175(17.8) |
10 | 20 | 145(14.8) | |
20 | 30 | 130(13.3) | |
30 | 50 | 120(12.2) | |
HT 200 | 2.5 | 10 | 220(22.4) |
10 | 20 | 195(19.9) | |
20 | 30 | 170(17.3) | |
30 | 50 | 160(16.3) | |
HT 250 | 4.0 | 10 | 270(27.5) |
10 | 20 | 240(24.5) | |
20 | 30 | 220(22.4) | |
30 | 50 | 200(20.4) | |
HT 300 | 10 | 20 | 290(29.6) |
20 | 30 | 250(25.5) | |
30 | 50 | 230(23.5) | |
HT 350 | 10 | 20 | 340(34.7) |
20 | 30 | 290(29.6) | |
30 | 50 | 260(26.5) |
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