供应耐热螺栓用钢25cr2mov圆钢
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25Cr2MoV有较好的抗晶间腐蚀性能,优良的耐腐蚀性及冷加工冲压性能,对氧化性酸(如硝酸)有很强的抗腐蚀性,对碱溶液及大部分有机酸和无机酸也有一定的抗腐蚀性能。
25Cr2MoV合金结构钢是制造各种紧固螺栓的钢种。25Cr2MoV合金结构钢具有良好的综合力学性能及工艺性能,一般在调质后使用。25Cr2MoV合金结构钢用于制造紧固螺栓。
25Cr2MoV合金结构钢化学成份:
碳 C :0.22~0.29
硅 Si:0.17~0.37
锰 Mn:0.40~0.70
硫 S :≤0.035
磷 P :≤0.035
铬 Cr:1.50~1.80
钒 V :0.15~0.30
钼 Mo:0.25~0.35
25Cr2MoV合金结构钢力学性能:
抗拉强度 σb (MPa):1090
屈服强度 σs (MPa):1042
伸长率 δ5 (%):18
断面收缩率 ψ (%):63
冲击韧性值 αku (J/cm2):213
硬度 :308HB
试样尺寸:某试料
25Cr2MoV合金结构钢热处理规范及金相组织:
热处理规范:890℃,30min,油淬;670℃,60min,回火,空冷。
金相组织:回火索氏体。
25Cr2MoV has good resistance to intergranular corrosion, excellent corrosion resistance and cold working performance. The oxidation of acid (such as nitric acid) has a strong corrosion resistance.
25Cr2MoV alloy structure steel was made of various fastening bolts. 25Cr2MoV alloy structural steel has good comprehensive mechanical properties and process performance, and is generally used in the quenching and tempering. 25Cr2MoV alloy structural steel used in the manufacture of fastening bolts.
Chemical composition of 25Cr2MoV alloy structure steel:
Carbon:0.22 C ~ 0.29
Silicon Si:0.17 ~ 0.37
Mn Mn:0.40 ~ 0.70
Sulfur: S = 0.035
P: P = 0.035
Chrome Cr:1.50 ~ 1.80
Vanadium:0.15 V ~ 0.30
Mo Mo:0.25 ~ 0.35
Mechanical properties of 25Cr2MoV alloy structural steel:
The ultimate tensile strength of B (MPa):1090
Yield strength s (MPa):1042
Elongation at 5 (%):18
Section shrinkage (%) by:63
Impact toughness value Ku (J/cm2):213
Hardness:308HB
Sample size: a sample
Specification for heat treatment and microstructure of 25Cr2MoV alloy structural steel:
Heat treatment specification: 890, 30min, oil quenching; 670, 60min, tempering, air cooling.
Metallographic structure: tempered wire.