|
Alloy |
UNS Number |
SAE Number |
|
13-8 PH |
UNS S13800 |
GENERAL PROPERTIES
13-8 stainless alloy (UNS S13800) is a martensitic precipitation-hardening stainless steel that has excellent strength, high hardness, superior toughness, and good corrosion resistance. Compared to other ferrous-base materials alloy 13-8 Stainless Steel offers a high level of useful mechanical properties under severe environmental conditions. Alloy 13-8 Stainless Steel is used in Aerospace components, landing gear, nuclear reactor components, petrochemical industry, injection moulding equipment etc. Alloy 13-8 Stainless Steel in the annealed condition can be strengthened further by relatively low temperature heat treatment.
APPLICATION AND CORROSION RESISTANCE
13-8 PH stainless steel is typically used in the following applications:
Used primarily for parts requiring corrosion resistance, stress-corrosion, and high strength 600°F (316°C), with good ductility and strength in transverse direction for
- Aerospace components
- Injection moulding equipment
- Waterjet cutting equipment
- Petrochemical industries
- Nuclear industries
PHYSICAL PROPERTIES
|
Melting Point |
Density |
Specific Gravity |
Modulus of Elasticity |
|
1404 - 1471 ℃ |
7.7g/cm3 |
7.76 |
195 GPa |
MECHANICAL PROPERTIES
|
Alloy |
Tensile Strength |
Yield Strength |
% Elongation |
|
H950 |
220,000 |
205,000 |
10 |
|
H1000 |
205,000 |
190,000 |
10 |
|
H1025 |
185,000 |
175,000 |
11 |
|
H1050 |
175,000 |
165,000 |
12 |
|
H1100 |
150,000 |
135,000 |
14 |
|
H1150 |
135,000 |
90,000 |
14 |
CHEMICAL PROPERTIES
|
Alloy |
C |
Si |
Mn |
P |
Cr |
Ni |
S |
N |
Fe |
|
13-8 PH |
0.05 |
0.1 |
0.2 |
0.01 |
12.25-13.25 |
7.5-8.5 |
0.008 |
0.1 |
Bal |
WELDING
Stainless steel-grade 13-8 can be welded in the solution annealed condition with the usage of 13-8 MO filler material. Inert gas shielded and resistance methods can also be used to cold wok this alloy.
HEAT TREATMENT
Stainless steel-grade 13-8 can be heat treated in the following conditions:
- CONDITION A: Soak at 927°C (1700°F) and cool for 1 h below 16°C (60°F).
- CONDITION RH 950: Treat Condition A material for 2 h at -73°C (-100°F), air warm to room temperature, heat the cold treated material to 510°C (950°F) for 4 h and finally cool the material in air.
- CONDITION H950, H1000, H1050, H1100, H1150: Soak solution treated material for 4 h at specific temperature and then cool the material in air.
- CONDITION H1150M: Soak solution treated material for 2 h at 760°C (1400°F), cool in air, re-heat for 4 h to 620°C (1150°F) and finally cool the material in air.
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