steel - Nouvelle page 1 - Free
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MMPDS-01<br />
31 January 2003<br />
Table 2.4.1.0(b). Material Specifications for 5Cr-Mo-V Aircraft Steel<br />
AMS 6437<br />
AMS 6488<br />
AMS 6487<br />
Specification<br />
Form<br />
Sheet, strip, and plate (air melted)<br />
Bar and forging (air melted, premium quality)<br />
Bar and forging (CEVM)<br />
The room-temperature properties of 5Cr-Mo-V aircraft <strong>steel</strong> are affected by extended exposure to<br />
temperatures near or above the tempering temperature. The limiting temperature to which the alloy may be<br />
exposed for extended periods without significantly affecting its room-temperature properties may be<br />
estimated at 100EF below the tempering temperature for the desired strength level. The effect of temperature<br />
on the physical properties is shown in Figure 2.4.1.0.<br />
19<br />
8<br />
18<br />
α<br />
7<br />
K, Btu/[(hr)(ft 2 )(°F)/ft]<br />
17<br />
16<br />
K<br />
6<br />
5<br />
α, 10 -6 in./in./°F<br />
15<br />
α - Between 70 °F and indicated temperature<br />
K - At indicated temperature<br />
4<br />
14<br />
3<br />
0 200 400 600 800 1000 1200 1400 1600<br />
Temperature, °F<br />
Figure 2.4.1.0. Effect of temperature on the physical properties of 5Cr-Mo-V aircraft<br />
<strong>steel</strong>.<br />
2.4.1.1 Heat-Treated Condition — The effect of temperature on various mechanical properties<br />
for heat-treated 5Cr-Mo-V aircraft <strong>steel</strong> is presented in Figures 2.4.1.1.1(a) through 2.4.1.1.4.<br />
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