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X7CrNiMoBNb16-16簡(jiǎn)介

牌號(hào) X7CrNiMoBNb16-16
1.4986
對(duì)應(yīng)標(biāo)準(zhǔn) NF EN 10269-1999
用于高溫或低溫條件下的緊固件用鋼及鎳合金
歸類 奧氏體不銹鋼
密度 7.9 g/cm3
X7CrNiMoBNb16-16 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Ni Mo B 更多
最小值 0.04 0.3 - - - 15.5 15.5 1.6 0.05 Nb+Ta:10×C~1.2
最大值 0.1 0.6 1 0.045 0.03 17.5 17.5 2 0.1
◎ 未經(jīng)買方同意，不得隨意向鋼中添加表中未列的元素，冶煉精加工除外。采用一切必要措施以防在廢鋼和生產(chǎn)原料中帶入這些元素，因?yàn)槠鋾?huì)削弱鋼的機(jī)械性能，降低鋼的適用性 碳當(dāng)量計(jì)算
X7CrNiMoBNb16-16 機(jī)械性能
直徑
d
mm		 熱處理或狀態(tài)
抗拉強(qiáng)度
σb
Mpa 		屈服點(diǎn)
σs
Mpa 		斷后伸長(zhǎng)率或延伸率
δ
% 		沖擊吸收能量
KV2
J
d≤100 +WW+P 650~850 ≥500 ≥16 ≥50
◎ +AT=固溶退火；+C=冷作硬化；+N=正火；+NT=正火及回火；+P=沉淀硬化；+QT=淬火及回火；WW=熱作硬化；+AC=球化退火；+A=軟化退火；+S=冷剪處理（treated for cold shearing） 鋼在室溫和20攝氏度交貨條件下的機(jī)械性能，符合97/23/EC的基本安全要求

  • 交付條件下在高溫下的最小屈服強(qiáng)度

    Material designationHeat treatment
    condition    		Diameter
    d
    mm    		Minimum 0.2%-proof strength Rp0.2 in MPa at a temperature (in°C) of:
    Name Number50100150200250300350400450500550600650
    X7CrNiMoBNb16-161.4986+WW+Pd≤100489470451432412393372353334314284255206

  • 交付條件下在高溫下的最小抗拉強(qiáng)度

    Material designationHeat treatment
    condition    		Diameter
    d
    mm    		Minimum tensile strength Rm in MPa at a temperature (in°C) of:
    Name Number50100150200250300350400450500550600650
    X7CrNiMoBNb16-161.4986+WW+Pd≤100635615590570550530505485460440420395375

  • 符合本歐洲標(biāo)準(zhǔn)的產(chǎn)品熱處理指南

    Material designationHeat treatment
    condition    		Normalizing,quenching
    or solution annealing
    temperature
    °C    		Type of
    cooling    		Tempering or
    precipitation
    treatment (and time)
    °C
    Name Number
    X7CrNiMoBNb16-161.4986+WW+P①-750 to 800(5 to 1 h,a②)
    ◎ 根據(jù)原件相關(guān)規(guī)定，如果允許矯直后消除應(yīng)力，應(yīng)選擇消除應(yīng)力的溫度，以獲得規(guī)定的性能。
    ① 750℃ - 850℃熱作
    ② a=air; o=oil; w=water


  • 物理性能

    各溫度°C時(shí)靜態(tài)彈性模量20°C與各溫度間熱膨脹系數(shù)熱導(dǎo)率比熱容電阻率
    20100200300400500600700800100°C200°C300°C400°C500°C600°C20°C20°C20°C
    GPa10-6 K-1W/m.KJ/kg.KΩ.mm2/m
    196192186181174165157147-16.617.717.917.917.918.115460n.a.
    n.a.: no values available


  • 蠕變性能

    DesignationTemperatureStrength for
    1% (plastic)
    creep strain ①    		Creep rupture
    strength for ②
    Name Number°C10000h100000h10000h100000h200000h
    X7CrNiMoBNb16-161.4986580358302381323-
    590336278364298-
    600324255344275-
    610306230325251-
    620287204306228-
    630268179287204-
    640247153267181-
    650226128245157-
    660204104221133-
    67018285198113-
    ◎ The values given in this table are the mean values of the scatter band so far obtained, which will be checked from time to time as further test results become available and if necessary corrected.
    ◎ * and () indicate values of extended stress extrapolation or time extrapolation, respectively.
    ① This is the stress relative to the initial cross- section leadina to a permanent elongation of 1 % after 10000 h and 100000 h.
    ② This is the stress relative to the initial cross- section leading to fracture after 10000 h, 100000 h and 200000 h.


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