| 牌號 | X8CrNiNb16-13 |
| 1.4961 | |
| 對應(yīng)標準 | 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 |
| 標簽 | 抗蠕變等級 |
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高溫下的最小屈服強度
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 X8CrNiNb16-13 1.4961 +AT 191 175 166 157 147 137 132 128 123 118 118 113 Minimum 1.0% proof strength Rp1.0,MPa
at a temperature (in°C) of:50① 100 150 200 250 300 350 400 450 500 550 600 227 205 195 186 176 167 162 157 152 147 147 142 ① Determined by linear interpolation. -
高溫下的最小抗拉強度
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 X8CrNiNb16-13 1.4961 493 465 440 420 400 385 375 370 360 350 340 320 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
coolingX8CrNiNb16-13 1.4961 1150 to 850 air +AT 1050 to 1110 water,air ⑤ 900 to 950 ⑦ 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 cooling sufficiently rapid.
⑥ Minimum holding time:30min.Minimum holding time:30min.
⑦ 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 X8CrNiNb16-13 1.4961 +AT 580 182 - - 129 - 115 - 127 91 590 170 - - 119 - 105 - 120 84 600 157 - - 108 - 94 - 113 78 610 145 - - 98 - 85 - 106 73 620 134 - - 89 - 77 - 99 67 630 124 - - 80 - 69 - 92 61 640 113 - - 72 - 61 - 85 55 650 103 - - 64 - 53 - 78 49 660 93 - - 57 - 47 - 72 44 670 84 - - 50 - 41 - 66 39 680 76 - - 44 - 36 - 59 34 690 70 - - 39 - 31 - 54 30 700 64 - - 34 - 27 - 49 26 710 59 - - 30 - 25 - 45 24 720 55 - - 27 - 22 - 42 21 730 51 - - 25 - 19 - 39 19 740 47 - - 22 - 17 - 36 17 750 44 - - 20 - 15 - 34 16 ◎ Values were taken from DIN 17460 [3].
① Values in parantheses involved time and/or stress extrapolation; values with asterisk involved time extrapolation.
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