| 牌號 | 20CrMoVTiB4-10 |
|---|---|
| 1.7729 | |
| 對應標準 | NF EN 10269-1999
用于高溫或低溫條件下的緊固件用鋼及鎳合金 |
| 歸類 | 合金鋼 |
| 標簽 | 淬火回火鋼 |
-
交付條件下在高溫下的最小屈服強度
Material designation Heat treatment
conditionDiameter
d
mmMinimum 0.2%-proof strength Rp0.2 in MPa at a temperature (in°C) of: Name Number 50 100 150 200 250 300 350 400 450 500 550 600 650 20CrMoVTiB4-10 1.7729 +QT d≤160 642 624 603 595 581 573 559 537 508 464 406 334 -
-
符合本歐洲標準的產品熱處理指南
Material designation Heat treatment
conditionNormalizing,quenching
or solution annealing
temperature
°CType of
cooling①Tempering or
precipitation
treatment (and time)
°CName Number 20CrMoVTiB4-10 1.7729 +QT 660 to 700
+
970 to 990a
w,o680 to 720 ◎ 根據原件相關規定，如果允許矯直后消除應力，應選擇消除應力的溫度，以獲得規定的性能。 ① a=air; o=oil; w=water
-
蠕變性能
Designation Temperature Strength for
1% (plastic)
creep strain ①Creep rupture
strength for ②Name Number °C 10000h 100000h 10000h 100000h 200000h 20CrMoVTiB4-10 1.7729 450 - - 520 453 （430） 460 - - 491 423 （399） 470 - - 463 394 （369） 480 - - 437 365 （338） 490 - - 412 337 （307） 500 - - 388 307 （274） 510 - - 364 276 （237） 520 - - 340 241 （198） 530 - - 315 204 （162） 540 - - 288 169 （135） 550 - - 261 142 （114） 560 - - 231 121 （96） 570 - - 200 103 - 580 - - 170 - - 590 - - 146 - - 600 - - 127 - - ◎ The values given in this table are the mean values of the scatter band so far obtained, which will be checked from time to time as further test results become available and if necessary corrected.
◎ * and () indicate values of extended stress extrapolation or time extrapolation, respectively.
① This is the stress relative to the initial cross- section leadina to a permanent elongation of 1 % after 10000 h and 100000 h.
② This is the stress relative to the initial cross- section leading to fracture after 10000 h, 100000 h and 200000 h.
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松弛性能
Material designation Temperature
℃for an
initial strain
∈A total
%Residual stress in N/mm2
after stressing duration forName Number 1000
h10000
h30000
h21CrMoV5-7 1.7709 400 0.15 247 224 212 450 216 188 173 500 180 141 118 550 134 70 42 600 61 - - ◎ The values given in this table are the mean values of the scatter band so far obtained, which will be checked from time to time as further test results become available and if necessary corrected.
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