| 牌号 | X8NiCrAITi32-21 |
| 1.4959 | |
| 对应标准 | NF EN 10028-7-2000
压力容器用不锈钢扁平产品 Flat products made of steels for pressure purposes Part 7: Stainless steels |
| 归类 | 奥氏体不锈钢 |
| 标签 | 标准等级 |
| 密度 | 8 g/cm3 |
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高温下的最小屈服强度
Material designation Heat treatment
conditionMinimum 0.2% proof strength Rp0.2,MPa
at a temperature (in°C) of:Name Number 100 150 200 250 300 350 400 450 500 550 600 X8NiCrAITi32-21 1.4959 +AT 140 127 115 105 95 90 85 82 80 75 75 Minimum 1.0% proof strength Rp1.0,MPa
at a temperature (in°C) of:100 150 200 250 300 350 400 450 500 550 600 160 147 135 125 115 110 105 102 100 95 95
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高温下的最小抗拉强度
Material designation Minimum tensile strength Rm,MPa
at a temperature (in°C) of:Name Number 100 150 200 250 300 350 400 450 500 550 600 X8NiCrAITi32-21 1.4959 465 445 435 425 420 418 415 415 415 - - -
热处理指南
Material designation Hot forming Heat
treatment
symbolSolution anneailing
①②Post weld heat
treatment
Creep resisting steelsName Number Temperature
℃Type of
coolingTemperature
℃ ③④Type of
coolingTemperature
℃ ⑦Type of
coolingX8NiCrAITi32-21 1.4959 1150 to 850 air +AT 1100 to 1200 ⑤ water,air ⑥ 900 to 950 ⑧ air ◎ 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 After solution annealing the grain size according to EN ISO 643 shall be 1 to 5.
⑥ cooling sufficiently rapid.
⑦ Minimum holding time:30min.Minimum holding time:30min.
⑧ Minimum holding time:30min.
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物理性能
Modulus of elasticity at Mean coefficient of thermal
expansion between 20 ℃ andThermal
conductivity
at 20℃Specific
thermal
capacity
at 20℃Specific electrical
resistivity
at 20℃20°C 100°C 200°C 300°C 400°C 500°C 600°C 700°C 800°C 900°C 1000°C 100°C 200°C 300°C 400°C 500°C 600°C 700°C 800°C 900°C 1000°C KN/mm2 10-6 K-1 W/m.K J/kg.K Ω.mm2/m 200 190 185 175 170 160 155 145 140 135 125 15.4 16 16.5 16.8 17.2 17.5 17.9 18.3 18.6 19 12 460 0.99 -
蠕变性能
Designation Heat treatment
conditionTemperature Strength for
ruptureStrength for
1% (plastic)
creep strainin N/mm2 for ① Name Number °C 10000h 30000h 50000h 100000h 150000h 200000h 250000h 10000h 100000h X8NiCrAITi32-21 1.4959 +AT 700 73 58.2 - 44.8 - 38.2 - 59 42 710 67.8 54 - 41.4 - 35.2 - 55.5 38 720 63 50.1 - 38.3 - 32.5 - 52 34.4 730 58.5 46.5 - 35.4 - 30 - 48.5 31.3 740 54.4 43.1 - 32.8 - 27.7 - 45 28.4 750 50.6 40 - 30.3 - 25.6 - 41.7 26 760 47 37.1 - 28 - 23.6 - 38.4 23.5 770 43.7 34.4 - 25.9 - 21.8 - 35.6 21.3 780 40.7 31.9 - 24 - 20.1 - 32.9 19.3 790 37.8 29.6 - 22.1 - 18.5 - 30.5 17.6 800 35.2 27.4 - 20.4 - 17 - 28.2 16 810 32.7 25.4 - 18.9 - 15.6 - 26.2 14.7 820 30.4 23.6 - 17.4 - 14.4 - 24.2 13.4 830 28.3 21.8 - 16 - 13.2 - 22.4 12.1 840 26.3 20.2 - 14.8 - 12.1 - 20.8 11.1 850 24.4 18.7 - 13.6 - 11.1 - 19.1 10 860 22.7 17.3 - 12.5 - 10.1 - 17.6 9.1 870 21 16 - 11.5 - 9.23 - 16.1 8.2 880 19.5 14.8 - 10.5 - 8.41 - 14.7 7.3 890 18.1 13.6 - 9.6 - 7.63 - 13.4 6.5 900 16.8 12.6 - 8.76 - 6.91 - 12.1 5.7 910 15.6 11.6 - 7.98 - 6.23 - 10.9 5 920 14.4 10.6 - 7.25 - 5.6 - 9.8 4.4 930 13.3 9.77 - 6.57 - 5.01 - 8.8 3.9 940 12.3 8.95 - 5.93 - 4.45 - 7.8 3.4 950 11.4 8.19 - 5.33 - 3.93 - 6.9 2.9 960 10.5 7.47 - 4.77 - 3.43 - 6.1 2.5 970 9.63 6.8 - 4.23 - 2.95 - 5.3 2.1 980 8.85 6.17 - 3.73 - - - 4.6 1.8 990 8.11 5.57 - 3.25 - - - 4 1.6 1000 7.42 5.01 - 2.79 - - - 3.5 1.4 ◎ Values were taken from DIN 17460.
① Values in parantheses involved time and/or stress extrapolation; values with asterisk involved time extrapolation.
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