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牌號(hào) X5NiCrAITi31-20（+RA）
1.4958（+RA）
對(duì)應(yīng)標(biāo)準(zhǔn) NF EN 10028-7-2000
壓力容器用不銹鋼扁平產(chǎn)品
Flat products made of steels for pressure purposes Part 7: Stainless steels
歸類 奧氏體不銹鋼
標(biāo)簽 標(biāo)準(zhǔn)等級(jí)
密度 8 g/cm3
X5NiCrAITi31-20（+RA） 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Ni Cu N Ti Nb Co Al 更多
最小值 0.03 - - - - 19 30 - - 0.2 - - 0.2 AI+Ti: ≤ 0.7
Ni+Co:30~32.5
最大值 0.08 0.7 1.5 0.015 0.01 22 32.5 0.5 0.03 0.5 0.1 0.5 0.5
◎ 未經(jīng)買方同意，不得隨意向鋼中添加表中未列的元素槐臀，冶煉精加工除外郑现。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罚缕，因?yàn)槠鋾?huì)削弱鋼的機(jī)械性能简烘，降低鋼的適用性嗜侮。
X5NiCrAITi31-20（+RA） 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(zhǎng)率或延伸率
δ
% 		沖擊吸收能量
KV2
J
P：T ≤ 75 +AT 500~750 Rp0.2：≥170
Rp1.0：≥200
①②		 T ＜ 3mm: ≥30
T ≥ 3mm: ≥ 30
②③		 20℃：
(l: ≥120惜选；t: ≥80)
P：T ≤ 75 +RA 500~750 Rp0.2：≥210
Rp1.0：≥240
①②		 T ＜ 3mm: ≥30
T ≥ 3mm: ≥ 30
②③		 20℃：
(l: ≥120榴廷；t: ≥80)
◎C- 冷軋帶鋼; H- 熱軋帶鋼; P- 熱軋中厚板；T- 厚度壁万；t- 橫向鳍彪；l-縱向。
◎+A=軟化退火荔鸵；+AT=固溶退火侣夷；+QT=淬火及回火；+RA=再結(jié)晶退火仑乌。
◎ 如果熱加工和隨后冷卻的條件符合ENISO3651-2中對(duì)產(chǎn)品機(jī)械性能和抗晶間腐蝕性的要求，則可以省略固溶處理琴锭。
*抗晶間腐蝕根據(jù)EN ISO 3651-2進(jìn)行測(cè)試晰甚。在交貨條件下：有；在致敏狀態(tài)下：無(wú)。
① 對(duì)于連續(xù)熱軋產(chǎn)品厕九，可在詢價(jià)和訂購(gòu)時(shí)商定Rp0.2(即表中σs)的最小值提高20MPa蓖捶，Rp1.0的最小值提高10MPa。
② 如果在軋制寬度<300mm的帶材情況下扁远，采用縱向試驗(yàn)件俊鱼，最小值減小如下:屈服強(qiáng)度-15MPa，恒定標(biāo)距的延伸率-5%畅买，比例標(biāo)距延伸率-2%并闲。
③ T＜3mm：該值適用于標(biāo)距為80mm、寬度為20mm的試件谷羞，也可以使用標(biāo)距為50mm帝火、寬度為12.5mm的試件。T ≥3mm：該值適用于標(biāo)距為5.65√S的試件脯黎。

  • 高溫下的最小屈服強(qiáng)度

    Material designationHeat treatment
    condition    		Minimum 0.2% proof strength Rp0.2,MPa
    at a temperature (in°C) of:
    Name Number100150200250300350400450500550600
    X5NiCrAITi31-201.4958+AT14012711510595908582807575
    Minimum 1.0% proof strength Rp1.0,MPa
    at a temperature (in°C) of:
    100150200250300350400450500550600
    1601471351251151101051021009595
    +RAMinimum 0.2% proof strength Rp0.2,MPa
    at a temperature (in°C) of:
    100150200250300350400450500550600
    180170160152145137130125120115110
    Minimum 1.0% proof strength Rp1.0,MPa
    at a temperature (in°C) of:
    100150200250300350400450500550600
    205193180172165160155150145140135

  • 高溫下的最小抗拉強(qiáng)度

    Material designationMinimum tensile strength Rm,MPa
    at a temperature (in°C) of:
    Name Number100150200250300350400450500550600
    X5NiCrAITi31-201.4958465445435425420418415415415--

     ① The tensile strength values also apply for the recrystallizing annealed condition(+RA).

  • 熱處理指南

    Material designationHot formingHeat
    treatment
    symbol    		 Solution anneailing
    ①②    		Post weld heat
    treatment
    Steel with ≤ 0.03% C
    Name NumberTemperature
    ℃    		Type of
    cooling    		Temperature
    ℃ ③④    		Type of
    cooling    		Temperature
    ℃ ⑥    		Type of
    cooling
    X5NiCrAITi31-201.49581150 to 850air+AT1100 to 1200water,air ⑤900 to 950 ⑦air 
    +RA920 to 1000
    ◎ a=air; o=oil; w=water.
    ◎ Scale and annealing colours produced during hot forming, heat treatment or welding may adversely affect the corrosion resistance. They should be removed as far as possible before use, e.g. by pickling.
    ◎ The temperatures of annealing should be agreed for simulated heat treated test pieces.
    ① The solution treatment 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 and provided these requirements are met even after appropriate subsequent solution annealing.
    ② Re-crystallizing annealing.
    ③ If heat treatment is carried out in a continuous furnace, the upper part of the range specified is usually preferred, or even exceeded.
    ④ The lower end of the range specified for solution annealing should be aimed at for 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 Mo contents up to 3% and a temperature of 1020℃ for steets with Mo contents exceeding 3%.
    ⑤ cooling sufficiently rapid.

    ⑥ Minimum holding time:30min.

    ⑦  Recommended for components with greater wall thickness.


  • 物理性能

    Modulus of elasticity atMean coefficient of thermal
    expansion between 20 ℃ and    		Thermal
    conductivity
    at 20℃    		Specific
    thermal
    capacity
    at  20℃    		Specific electrical
    resistivity
    at 20℃
    20°C100°C200°C300°C400°C500°C600°C700°C800°C900°C1000°C100°C200°C300°C400°C500°C600°C700°C800°C900°C1000°C
    KN/mm210-6 K-1W/m.KJ/kg.KΩ.mm2/m
    20019018517517016015514514013512515.41616.516.817.217.517.918.318.619124600.99

  • 蠕變性能

    DesignationHeat treatment
    condition    		TemperatureStrength for
    rupture    		Strength for
    1% (plastic)
    creep strain 
    in N/mm2 for ①
    Name Number°C10000h30000h50000h100000h150000h200000h250000h10000h100000h
    X5NiCrAITi31-201.4958+AT500290--215-(196)---
    510279--205-(186)---
    520267--195-(176)---
    530254--184-(166)---
    540240--172-(155)---
    550225--160-(143)---
    560208--147-(130)---
    570190--133-(117)---
    580172--119-(105)---
    590155--106-(93)---
    600140--95-(83)-115(85)
    610128--85-(74)-109(79)
    620118--78-(68)-102(74)
    630109--72-(63)-96(69)
    640103--67-(59)-90(64)
    65097--63-(55)-84(59)
    66091--59-(52)-78(55)
    67085--55-(48)-73(51)
    68080--52-(45)-68(47)
    69074--48-(41)-63(43)
    70069--44-(38)-58(40)
    +RA500315--258-(242)---
    510297--241-(225)---
    520280--224-(207)---
    530262--206-(190)---
    540243--189-(172)---
    550224--171-(155)-164(132)
    560204--153-(138)-154(122)
    570184--136-(122)-144(111)
    580165--119-(106)-133(101)
    590147--104-(92)-123(92)
    600131--90-(80)-113(82)
    610117--79-(70)-103(74)
    620106--70-(62)-93(65)
    63096--62-(55)-84(58)
    64087--56-(49)-75(51)
    65080--51-(44)-67(46)
    66073--46-（40）-60(41)
    67067--42-（36）-55(37)
    68061--38-（33）-50(33)
    69055--34-（29）-45(30)
    70050--30-（26）-41(27)
    ◎ Values were taken from DIN 17460.
    ① Values in parantheses involved time and/or stress extrapolation; values with asterisk involved time extrapolation.


X5NiCrAITi31-20（+RA） 對(duì)應(yīng)不同標(biāo)準(zhǔn)
1 NF EN 10028-7-2008 壓力容器用不銹鋼扁平產(chǎn)品
2 NF EN 10028-7-2000 壓力容器用不銹鋼扁平產(chǎn)品
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