新闻资讯
Refractaloy26、RefracTaloy70、RA333、RA330-04含钴12Cr耐热钢高温合金化学成分力学性能
过去,一直将12Cr耐热钢用于生产蒸汽透平的高温螺栓。现在,为了提高热效率,蒸汽透平的最高蒸汽温度已上升到873K。因此,必须用奥氏体合金来适应这种更为严酷的条件(例如蒸汽吸入口),因为12Cr钢在该条件下已丧失了蠕变强度。然而,尽管Refractaloy26在高温下具有较高的蠕变强度,但这类合金的缺点是热膨胀比12Cr耐热钢大,成本也高。因此必须开发具有更高蠕变强度的12Cr钢来取代奥氏体合金以用于包括903K级蒸汽透平在内的各种用途。为此,已为转子锻件开发了含3%Co、0.7%Mo和1.8%W的较高蠕变强度的12Cr钢,其蠕变强度和吸收能均比普通螺栓材料的高。在大生产中,采用VIM-VSR重熔工艺以减少化学成分偏析、硼收得率的波动以及锭子中的非金属夹杂物。并且精确控制回转锻造机的锻造温度,防止δ铁的析出。这种钢已成功地应用于高温螺栓和转子叶片。
refractaloy 26
similiar trademark
trademark |
AISI/ASTM |
W.Nr |
refractaloy 26 |
|
Chemical composition
Alloy |
% |
Ni |
Cr |
Fe |
Mo |
N |
C |
Mn |
Si |
S |
Cu |
P |
refractaloy 26 |
Min. |
30 |
26 |
Balance |
6 |
0.15 |
|
|
|
|
1 |
|
Max. |
32 |
28 |
7 |
0.2 |
0.015 |
2 |
0.3 |
0.01 |
1.4 |
0.02 |
Pysical properties
Density |
8.1 g/cm3 |
Melting point |
1350-1370 °C |
minimum mechanical properties in the room temperature
Alloy status |
Tensile strength |
Yield strength RP0.2 N/mm² |
Elongation |
Solution treatment |
650 |
350 |
35 |
1、镍基高温合金 1、中国牌号:固溶强化型镍基高温合金 GH3007(GH5K);GH3030(GH30);GH3039(GH39);GH3044;GH3128(GH128); GH3170(GH170);GH3536(GH536);GH3600(GH600);GH3625(GH625);GH3652(GH652);
2、中国牌号:时效强化型镍基高温合金 GH4033(GH33);GH4037(GH37);GH4049(GH49);GH4080A(GH80A);GH4090(GH90); GH4093(GH93);GH4098(GH98);GH4099(GH99);GH4105(GH105);GH4133(GH33A); GH4133B;GH4141(GH141);GH4145(GH145);GH4163(GH163);GH4169(GH169); GH4199(GH199);GH4202(GH202);GH4220(GH220);GH4413(GH413);GH4500(GH500); GH4586(GH586);GH4648(GH648);GH4698(GH698);GH4708(GH708);GH4710(GH710); GH4738(GH738;GH684);GH4742(GH742);
3、美国牌号:固溶强化型镍基高温合金 Haynes 214;Haynes 230;Inconel 600; Inconel 601; Inconel 602CA; Inconel 617; Inconel 625;RA333;Hastelloy B; Hastelloy N; Hastelloy S; Hastelloy W; Hastelloy X; Hastelloy C-276; Haynes HR-120; Haynes HR-160;Nimonic 75; Nimonic 86;
4、美国牌号:沉淀硬化型镍基高温合金 Astroloy;Custom Age 625PLUS; Haynes 242; Haynes 263; Haynes R-41; Inconel 100; Inconel 102;Incoloy 901; Inconel 702; Inconel 706; Inconel 718; Inconel 721; Inconel 722; Inconel 725; Inconel 751; Inconel X-750;M-252;Nimonic 80A; Nimonic 90; Nimonic 95; Nimonic 100; Nimonic 105; Nimonic 115;C-263;Pyromet 860; Pyromet 31;Refractaloy 26;Rene, 41; Rene, 95; Rene, 100;Udimet 500; Udimet 520; Udimet 630; Udimet 700; Udimet 710;Unitemp af2-1DA;Waspaloy;