Precipitation hardening (PH) alloys
Best combination of strength and corrosion resistance
Strengthen by heat treating
Contain small amounts of alloying elements that form microscopic particles within the alloy during heat treatment
- The particles strengthen the alloy
Applications include: Components for aerospace, dental tools, automotive, and furnaces
|
SAE Type |
UNS |
C |
Mn |
Cr |
Ni |
Other |
|
13-8 Mo |
S13800 |
0.05, max |
0.2, max |
12.25 – 13.25 |
7.5 – 8.5 |
2.0-2.5 Mo, 0.9-1.35 Al, 0.01 N |
|
15-5 |
S15500 |
0.07, max |
1.00, max |
14.0 – 15.5 |
3.5 – 4.5 |
2.5-4.5 Cu, 0.15-0.45 Nb |
|
17-4 |
S17400 |
0.07, max |
1.00, max |
15.5 – 17.5 |
3.0 – 5.0 |
3.0-5.0 Cu, 0.15-0.45 Nb |
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