F91高溫不鏽鋼化學成分,F91高溫不鏽鋼化學成分參數,F91高溫不鏽鋼化學成分應用 - 廣州富山閥門有限公司_威客电竞

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F91高溫不鏽鋼化學成分

2015-08-28 08:45:02| 發布者: 廣州富山閥門有限公司| 查看: 5549

F91高溫不鏽鋼化學成分,F91高溫不鏽鋼化學成分參數,F91高溫不鏽鋼化學成分應用

F91高溫不鏽鋼化學成分:
閥門用鋼F9,F91,F92,F22 生産标準:ASTM SA182/SA-182M 1. 低合金鋼: F1,F2,F5,F5A,F9,F91,F11,F12,F21,F3V,F3VCB,F22,F22V 2. 馬氏體不鏽鋼:F6A,F6B,F6NM 3. 鐵素體不鏽鋼:FXM-27B,F429,F430,FR 4. 奧氏體不鏽鋼: F46,F47,F48,F49,F20,F10,F56,F58,F50,F51,F57,F55,F59,F52,F53 , F54,F304,F304L,F304H,F304N,F304LN,F309H,F310,F310H. 提供産品:各種異型鍛件及法蘭. φ6mm - φ350mm 

F91鋼材的化學成分 
2Cr12NiMoWV:耐熱鋼棒 GB/T 1221-1992牌号:2Cr12NiMoWV 
标準:GB/T 1221-1992 
●特性及适用範圍: 
用作高溫結構部件,汽輪機葉片、盤、葉輪軸、螺栓等。 
●化學成份: 
碳 C :0.20~0.25 
矽 Si:≤0.50 
錳 Mn:0.50~1.00 
硫 S :≤0.030 
磷 P :≤0.035 
鉻 Cr:11.00~13.00 
鎳 Ni:0.50~1.00 
釩 V :0.20~0.40 
钼 Mo:0.75~1.25 
鎢 W :0.70~1.25 
●力學性能: 
抗拉強度 σb (MPa):淬火回火,≥885 
條件屈服強度 σ0.2 (MPa):淬火回火,≥735 
伸長率 δ5 (%):淬火回火,≥10 
斷面收縮率 ψ (%):淬火回火,≥25 
硬度 :退火,≤269HB;淬火回火,≤341HB 
●熱處理規範及金相組織: 
熱處理規範:1)退火,830~900℃緩冷;2)淬火,1020~1070℃油冷或空冷; 3)回火,600℃以上空冷。 
金相組織:組織特征為馬氏體型。 
●交貨狀态:一般以熱處理規範狀态交貨,其熱處理種類在合同中注明;未注明者,按不熱處理狀态交貨。 
F91 耐熱不鏽鋼 
F91(1cr9Mo1VNb),F91鋼是91鋼的各種用途分支鋼種的一種,在美國ASTM和ASME标準中,以用途區分的鋼系列有: 
A213 T91 鐵素體和奧氏體鍋爐過熱器和熱交換器無縫鋼管 
A182 F91 高溫用鍛軋合金鋼管、法蘭、鍛制管件和閥門和其它部件 
A234 WP91 碳鋼和合金鋼中溫和高溫用鍛制管件 
A200 P91 石化工業用鐵素體合金鋼無縫鋼管 
A336 F91 鋼鍛件、高溫高壓用合金鋼部件 
A199 T91 熱交換器和冷凝器管用冷拔合金無縫鋼管 
A369 FP91 高溫用碳鋼和鐵素體合金鋼鍛造空心管 
A335 P91 高溫管道用鐵素體無縫鋼管 

91鋼是由美國像樹林國家試驗室ORNL(Oak Ridge National Laboraty)七十年代開始研究開發,關于1983年列入ASME,為SA213-T91,主要是為了填補珠光體耐熱鋼和奧氏體不鏽鋼之間600-650℃溫度區域使用的新汽水管道用鋼的空白。91型鋼由于其出色的常溫性能和650℃以下的優良的持久和蠕變性能以及低的線膨脹系數、良好的工藝性,成本也較低(合金量9.5-11.5%),長期運行下有優異的組織穩定性,使它得以一枝獨秀地得到迅速推廣與發展。在我國,九十年代初被逐漸推廣用于閥門,三能管道樞紐鍛件及需使用在620℃以下場合的耐熱性要求較高的工業構件上。 

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