| 牌號(hào) | X6CrNi23-13 |
|---|---|
| 1.4950 | |
| 對(duì)應(yīng)標(biāo)準(zhǔn) | NF EN 10028-7-2008
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 | 抗蠕變等級(jí) |
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高溫下的最小屈服強(qiáng)度
Material designation Heat treatment
conditionMinimum 0.2% proof strength Rp0.2,MPa
at a temperature (in°C) of:Name Number 50① 100 150 200 250 300 350 400 450 500 550 600 X6CrNi23-13 1.4950 +AT 177 140 128 116 108 100 94 91 86 85 84 82 Minimum 1.0% proof strength Rp1.0,MPa
at a temperature (in°C) of:50① 100 150 200 250 300 350 400 450 500 550 600 219 185 167 154 146 139 132 126 123 121 118 114 ① Determined by linear interpolation. -
高溫下的最小抗拉強(qiáng)度
Material designation Minimum tensile strength Rm,MPa
at a temperature (in°C) of:Name Number 50① 100 150 200 250 300 350 400 450 500 550 600 X6CrNi23-13 1.4950 495 470 450 430 420 410 405 400 385 370 350 320 ① Determined by linear interpolation. -
熱處理指南
Material designation Hot forming Heat
treatment
symbolSolution anneailing
①②Post weld heat
treatment
Creep resisting steelsName Number Temperature
℃Type of
coolingTemperature
℃ ③④Type of
coolingTemperature
℃ ⑥Type of
coolingX6CrNi23-13 1.4950 1150 to 850 air +AT 1050 to 1150 water,air ⑤ not recommended - ◎ 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.
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蠕變性能
Designation Heat treatment
conditionTemperature Strength for
ruptureStrength for
1% (plastic)
creep strainin MPa for ① Name Number °C 10000h 30000h 50000h 100000h 150000h 200000h 250000h 10000h 100000h X6CrNi23-13 1.4950 +AT 550 160 - - 90 - - - 107 60 600 120 - - 65 - - - 80 35 650 70 - - 35 - - - 50 22 700 36 - - 16 - - - 25 12 750 - - - - - - - - - 800 18 - - 7.5 - - - 10 - ◎ Those preliminary values were taken from NFA 36-209 [4].
① Values in parantheses involved time and/or stress extrapolation; values with asterisk involved time extrapolation.
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