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.
Common Trade Names
15-5 Stainless, 15-5 PH
Chemical Composition
|
|
Ni
|
Cr
|
Mn
|
Cu
|
Si
|
Cb+Ta
|
C
|
P
|
S
|
Fe
|
|
MIN
|
3.5
|
14.0
|
-
|
2.5
|
-
|
0.15
|
-
|
-
|
-
|
-
|
|
MAX
|
5.5
|
15.5
|
1.0
|
4.5
|
1.0
|
0.45
|
0.07
|
0.04
|
0.03
|
Balance
|
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
ASTM-A564 (XM-12), BAC 5439 Rev H Class A Type1, BMS 7-240 (Boeing)
BSS7055 Rev A
STD 2154
UNS S15500
W. Nr./EN 1.4545
Inventory
15-5 PH Plate, 15-5 PH Rectangular Bar, 15-5 PH Round Bar
Features
· Precipitation Hardening
· High Strength
· Moderate corrosion resistance to 600°F
Applications
· Aerospace applications
· Chemical and petrochemical applications
· Pulp and paper
· Food processing
Physical Properties
Density: 0.280 lb/inch3
Poisson's Ratio: 0.272
Electrical Resistivity: 589 Ohm-circ mil/ft
|
Temperature, °F
|
70
|
200
|
800
|
|
Coefficient of Thermal Expansion, in/in°F x 10-6
|
-
|
-
|
6.3
|
|
Thermal Conductivity
Btu • ft/ft2 • hr • °F
|
-
|
10.6
|
-
|
|
Modulus of Elasticity,
psi X 106
|
28.5
|
-
|
-
|
* 70°F to indicated temperature.
Mechanical Properties
Minimum Specified Properties, ASTM A 564
|
Condition
|
H 900
|
H 1075
|
H 1150
|
A
|
|
0.2 Offset Yield Strength, ksi
|
170
|
125
|
105
|
-
|
|
Ultimate Tensile Strength, ksi
|
190
|
145
|
135
|
-
|
|
Elongation % in 2" minimum
|
10
|
13
|
16
|
-
|
|
Reduction of Area, %
|
35
|
45
|
50
|
-
|
|
Hardness, Brinell
|
388
|
331
|
277
|
363 (MAX)
|
