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X2CrNiMoN17-13-5簡(jiǎn)介

牌號(hào) X2CrNiMoN17-13-5
1.4439
對(duì)應(yīng)標(biāo)準(zhǔn) NF EN 10088-2-2005
普通用途不銹鋼板和鋼帶的交貨技術(shù)條件
Part2:Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
歸類 奧氏體不銹鋼
標(biāo)簽 標(biāo)準(zhǔn)等級(jí)
X2CrNiMoN17-13-5 化學(xué)元素成分含量(%)
成分 C Si Mn P S ① Cr Ni Mo N
最小值 - - - - - 16.5 12.5 4 0.12
最大值 0.03 1 2 0.045 0.015 18.5 14.5 5 0.22
◎ 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。采取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。 ◎ 在詢價(jià)和訂購時(shí)可商定更嚴(yán)格的碳含量范圍。
① 特定的硫含量范圍可以提高特定的性能。機(jī)械加工時(shí),建議硫含量（S）控制在0.015 % ~ 0.03 %范圍內(nèi)。焊接時(shí)，建議硫含量（S）控制在0.008 % ~ 0.03 %范圍內(nèi)。拋光時(shí)，建議硫含量（S）控制在0.015%以內(nèi)。 碳當(dāng)量計(jì)算
X2CrNiMoN17-13-5 機(jī)械性能
條件 熱處理或狀態(tài)
抗拉強(qiáng)度
σb
Mpa 		屈服點(diǎn)
σs
Mpa 		斷后伸長率或延伸率
δ
% 		沖擊吸收能量
KV2
J
冷軋帶鋼：T ≤ 8mm +AT 580~780 ( t )
Rp0.2：≥ 290①③
Rp1.0：≥ 320①②
③		 ( t )
T＜3mm：≥35③④
T ≥ 3mm：≥35③⑤		 -
熱軋帶鋼：T ≤ 13.5mm +AT 580~780 ( t )
Rp0.2：≥ 270①③
Rp1.0：≥ 310①②
③		 ( t )
T＜3mm：≥35③④
T ≥ 3mm：≥35③⑤		 （T＞10mm）
I：≥ 100；t：≥60
熱軋中厚板：T ≤ 75mm⑥ +AT 580~780 ( t )
Rp0.2：≥ 270①③
Rp1.0：≥ 310①②
③		 ( t )
T＜3mm：≥40③④
T ≥ 3mm：≥40③⑤		 （T＞10mm）
I：≥ 100；t：≥60
◎ T-厚度；l-縱向; t-橫向
◎ +A=軟化退火；+QT=淬火及回火；+P=沉淀硬化；+AT=固溶退火；+SR=消除應(yīng)力 ① 對(duì)于連續(xù)熱軋產(chǎn)品，可在詢價(jià)和訂購時(shí)商定Rp0.2(即表中σs)的最小值提高20MPa，Rp1.0的最小值提高10MPa。
② 僅作指導(dǎo)
③ 如果在軋制寬度<300mm的情況下，采用縱向試驗(yàn)件，最小值減小如下:屈服強(qiáng)度-15MPa，恒定標(biāo)距的延伸率-5%，比例標(biāo)距延伸率-2%。
④ T＜3mm時(shí)適用于標(biāo)距為80mm、寬度為20mm的試件。也可以使用標(biāo)距為50mm、寬度為12.5mm的試件。
⑤ T ≥3mm時(shí)適用于標(biāo)距為5.65√S的試件。
⑥ T＞75mm，可以協(xié)商機(jī)械性能。
* 交貨條件下有抗晶間腐蝕; 致敏條件下有抗晶間腐蝕（根據(jù)EN ISO 3651-2進(jìn)行測(cè)試）。

  • 交付條件下在高溫下的最小屈服強(qiáng)度

    Material designationHeat treatment
    condition    		Minimum 0.2%-proof strength,MPa
    at a temperature (in°C) of:    		Minimum 1%-proof strength,MPa
    at a temperature (in°C) of:
    Name Number100150200250300350400450500550100150200250300350400450500550
    X2CrNiMoN17-13-51.4439+AT225200185175165155150---255230210200190180175---

  • 符合本歐洲標(biāo)準(zhǔn)的產(chǎn)品熱處理指南

    Material designationHot formingHeat treatment
    symbol    		Solution anneailing
    Name NumberTemperature
    ℃    		Type of
    cooling    		Temperature①②③
    ℃    		Type of
    cooling④
    X2CrNiMoN17-13-51.44391150 to 850air+AT1060 to 1140water,air
    ◎ Temperature of solution annealing shall be agreed for simulated heat-treated test pieces.
    ① Solution annealing may be omitted if the conditions for hot working and subsequent cooling are such that the requirements for the mechanical properties of the product and the resistance to intergranular corrosion as defined in EN ISO 3651-2 are obtained.
    ② If heat treatment is carried out in a continuous furnace, the upper part of the range specified is usually preferred, or even exceeded.
    ③ Lower end of the range specified for solution annealing should be aimed at the heat treatment as part of further processing,because otherwise the mechanical properties might be affected. If the temperature of hot forming does not drop below the lower temperature for solution annealing, a temperature of 980℃ is adequate as a lower limit for Mo-free steels, a temperature of 1000℃ for steels with Mocontents up to 3 % and a temperature of 1020°C for steels with Mo contents exceeding 3 %.
    ④ Cooling sufficiently rapidly in order to avoid the occurrence of intergranular corrosion as defined in EN ISO 3651-2.


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