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牌號(hào)
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30CrMnSiNi2A合金結(jié)構(gòu)鋼絲
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中國(guó)ISC
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A45303
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對(duì)應(yīng)標(biāo)準(zhǔn)
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GB /T 3079-1993
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合金結(jié)構(gòu)鋼絲
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Alloy structure steels wires
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歸類
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合金鋼
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30CrMnSiNi2A 化學(xué)元素成分含量(%)
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成分
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C
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Si
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Mn
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P
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S
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Cr
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Ni
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Cu
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最小值
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0.27
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0.9
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1
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-
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-
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0.9
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1.4
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-
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最大值
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0.34
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1.2
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1.3
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0.025
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0.025
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1.2
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1.8
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0.25
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特級(jí)優(yōu)質(zhì)鋼 P≤0.025%，S≤0.015%，此時(shí)在鋼號(hào)后加E。
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GB 30CrMnSiNi2A GB/T 3079 Mechanical
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Yield
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Tensile
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Impact
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Elongation
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Reduction in cross section on fracture
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As-Heat-Treated Condition
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Brinell hardness (HBW)
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Rp0.2 (MPa)
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Rm (MPa)
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KV/Ku (J)
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A (%)
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Z (%)
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595 (≥)
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376 (≥)
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23
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12
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31
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Solution and Aging, Annealing, Ausaging, Q+T,etc
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242
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GB 30CrMnSiNi2A GB/T 3079 Physical
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GB 30Cr Mn Si Ni2A GB/T 3079的物理性能主要包括彈性模量、熱膨脹系數(shù)、導(dǎo)熱系數(shù)、比熱容、電阻值、密度、泊松比等。
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Temperature
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Modulus of elasticity
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Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and
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Thermal conductivity
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Specific thermal capacity
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Specific electrical resistivity
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Density
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Poisson’s coefficient, ν
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(°C)
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(GPa)
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(W/m·°C)
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(J/kg·°C)
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(Ω mm2/m)
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(kg/dm3)
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24
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-
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-
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0.31
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-
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953
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185
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-
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24.3
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312
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-
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531
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-
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11
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22.2
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112
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244
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GB 30CrMnSiNi2A GB/T 3079 Processing Service
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