Precipitation Hardening Stainlesss Plate Sheet
Martensitic type: such as 17-4PH, PH13-8Mo, etc., with high strength, corrosion resistance and oxidation resistance, suitable for the production of high-temperature corrosion resistant parts.
Precipitation hardening stainless steel is a stainless steel with intermetallic compounds and some carbides precipitated in the aging process by adding Mo, Ti, Al, Nb, Cu and other elements to improve the strength. It can not only make it hard (strong) by precipitation hardening (also known as age hardening) treatment, but also maintain the excellent weldability, cold working formability and corrosion resistance of austenitic stainless steel. It has high strength, good corrosion resistance and wear resistance, and excellent weldability and machinability.
Products Description
Thickness: 1.2mm – 10mm
Width: 600mm – 1500mm, the narrowed products pls check in strip products
Max coil weight: 20MT
Coil ID: 508mm,610mm
Finish: NO.1, 1D, 2D, #1, 2B finished, black, Anneal and pickling, mill finish, etc.
Typical mechanical properties for stainless steels alloy 17-4PH
| Grade 17-4PH | Annealed | Cond 900 |
Cond 1150 |
|---|---|---|---|
| Tensile Strength (MPa) | 1100 | 1310 | 930 |
| Elongation A5 (%) | 15 | 10 | 16 |
| Proof Stress 0.2% (MPa) | 1000 | 1170 | 724 |
| Elongation A5 (%) | 15 | 10 | 16 |
Typical physical properties for stainless steels alloy 17-4PH
| Property | Value |
|---|---|
| Density | 7.75 kg/m3 |
| Modulus of Elasticity | 196 GPA |
| Electrical Resistivity | 0.8 x 10-6 Ω.m |
| Thermal Conductivity | 18.4 W/m.K |
| Thermal Expansion | 10.8 x 10-6/K |
Grade about normal Precipitation Hardening Stainless Steel
S17400 17-4PH 0Cr17Ni4Cu4Nb
S15500 15-5PH 0Cr15Ni4Cu4Nb
S17700 17-7PH 0Cr17Ni7Al
17-10P 0Cr17Ni7Al
S17400 Chemical component ASTM A564
| C | Si | Mn | Cr | Ni | S | P | Cu |
|---|---|---|---|---|---|---|---|
| ≤0.07 | ≤1.0 | ≤1.0 | 15.0～17.5 | 3.0～5.0 | ≤0.03 | ≤0.04 | < 3.0～5.0 |
S17400 mechanical property ASTM A564
Tensile strength : > 1310 Mpa
Yield Strength : >1170 Mpa
Elongation (%): > 35%
Hardness: > Brinell 388
Application field
Precipitation-hardened stainless steel is widely used in aerospace, petrochemical, Marine engineering, nuclear energy and medical equipment. Especially in the need of high strength, good corrosion resistance and wear resistance, such as the aerospace field of hatchcover lock, high-strength bolts, springs and other spare parts, as well as the petrochemical field of pipelines, valves and other components.
Heat treatment process
Precipitation hardening stainless steel through solution treatment and aging treatment to obtain excellent hardness, strength and corrosion resistance. Solution treatment is to heat the steel to high temperatures, so that the alloying elements are fully dissolved in the matrix, and then quickly cooled to inhibit the formation of precipitates. Aging treatment is to hold heat at a lower temperature after solution treatment for a period of time, so that the alloying elements are precipitated in the form of intermetallic compounds or carbides, thereby improving the strength and hardness of the steel.
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