首先,现今各大钢厂生产sus315j1合金都引用以下锻造标准:
sus315j1棒材:
astm b 446; asme sb 446 (rod & bar),
ams 5666 (bar, forgings, & rings);
iso 9723 (rod & bar),
vdtüv 499 (rod & bar),
bs 3076na21 (rod & bar),
en 10095 (rod, bar, & sections),
din 17752 (rod & bar),
asme code case 1935 (rod, bar, & forgings),
sus315j1线材:
din 17753 (wire).
iso 9724 (wire)
ams 5837 (wire),
sus315j1锻件:
iso 9725 (forgings),
astm b 564; asme sb 564 (forgings);
din 17754 (forgings),
sus315j1板材:
astm b 443; astm sb 443 (plate, sheet & strip),
ams 5599; 5869; mam 5599 (plate, sheet & strip),
iso 6208 (plate, sheet & strip),
vdtüv 499 (plate, sheet & strip),
bs 3072na21 (plate & sheet),
en 10095 (plate, sheet & strip),
din 17750 (plate, sheet & strip),
asme code case 1935.
sus315j1管材:
astm b 444; astm b 829;
asme sb444; asme sb 829 (seamless pipe & tube),
astm b704; astm b 751; asme sb 704;
asme sb 751 (welded tube),
astm b705; astm b 775; asme sb 705;
asme sb 775 (welded pipe),
iso 6207 (tube),
ams 5581 (seamless & welded tube),
vdtüv 499 (tube),
bs 3074na21 (seamless pipe & tube),
din 17751 (tube),
asme code case 1935.
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其次,镍基高温合金的显微组织即各组成相特别是析出相的性质、形态、大小、含量及分布决定了其高温力学性能及运行寿命。然而,合金的组织状态是由其成分所决定的。因此,决定合金性能的源头在于合金成分本身,即构成合金成分的各元素的种类及其含量。让我们来看下sus315j1合金成分:
sus315j1不锈钢
不锈钢:sus315j1
标准:jis
●sus315j1特性应用:
●sus315j1化学成分:
碳 c:≤0.08
锰 mn:≤2.00
镍 ni:8.50~11.50
硅 si:0.50~2.50
磷 p:≤0.045
硫 s:≤0.030
铬 cr:17.00~20.50
钼 mo:0.50~1.50
铜 cu:0.50~3.50
●力学性能:
抗拉强度 σb (mpa):≥520
条件屈服强度 σ0.2 (mpa):≥205
伸长率 δ5 (%):≥40
硬度:≤200hv
从sus315j1成分中发现需要有较高含量的易氧化合金元素如铬、钼、钴、钛等强化元素,这些易氧化元素合金和镍金属本身成为合金中有害杂质元素特别是硫、磷的重要来源,镍基高温合金中要求有害杂质元素s和p的含量小于0.010-0.020%。