15 5 PH plate
The 15-5 PH alloy was designed to have greater toughness than 17-4 PH. The 15-5 PH alloy is martensitic in structure in the annealed condition and is further strengthened by a relatively low temperature heat treatment which precipitates a copper containing phase in the alloy. 15-5 PH is also referred to as XM-12 in some specifications.
AMS 5659, AMS 5862, AMS 5862J Type 2
ASME SA 564, ASME SA 693, ASME SA 705
ASTM A 564, ASTM A 693, ASTM A 698, ASTM A 705
W. Nr./EN 1.4545
ASTM-A564 (XM-12), BAC 5439 Rev H Class A Type1, BMS 7-240 (Boeing)
BSS7055 Rev A
STD 2154
UNS S15500
Chemical Requirement
UNS
Designations |
Type | Composition,% max | |||||||
C | Mn | P | S | Si | Cr | Ni | Cu | ||
S15500 | XM-12 | 0.07 | 1.0 | 0.04 | 0.03 | 1.0 | 14-15.5 | 3.5-4.5 | 2.5-4.5 |
Note*Cb+Ta:0.15-0.45 % Fe:Balance
Mechanical Requirments:
UNS | Type | Condition | Solution Treatment |
Tensile Strength ksi |
Yield Strength ksi |
Hardness HRC |
Hardness HB |
min. | min. | max. | max. | ||||
S15500 | XM-12 | A |
1900+/-25°F(1040+/-15°C) cool as |
... | ... | 38 | 363 |