.png)
.png)
.png)
PRODUCTS
Product Details
PH-steel 17-4 PH
17-4 PH is a precipitation-hardening stainless steel combining high strength, good corrosion resistance, and excellent mechanical properties for demanding industrial and engineering applications.
.png)
Category
Stainless Steel
.png)
Grade
17-4 PH / UNS S17400 / 1.4542
.png)
Standard
ASTM A564 / ASTM A693 / AMS 5604 / AMS 5643
.png)
Product Form
Bar / Rod / Plate / Sheet / Forging / Wire / Ring
.png)
Thickness
0.5–100 mm
.png)
Width
1000–2500 mm
.png)
Length
2000–6000 mm
Features
17-4 PH is a chromium-nickel-copper precipitation-hardening stainless steel known for its combination of high strength, good corrosion resistance and reliable mechanical properties. The alloy can achieve a wide range of strength and hardness levels through controlled heat treatment while maintaining useful corrosion resistance.
The material offers good dimensional stability during heat treatment and can be supplied in different precipitation-hardened conditions to meet specific mechanical requirements. Its combination of strength, toughness and corrosion resistance makes it suitable for highly stressed components operating in demanding environments.
17-4 PH is commonly supplied as bar, rod, plate, sheet, forgings, wire and rings for aerospace, chemical processing, marine, oil and gas, power generation and general engineering applications.
Surface Finish | Pickled / Bright / Ground / Polished / Machined |
Technique | Hot Rolled / Cold Rolled / Forged / Solution Treated / Age Hardened |
Applications | Aerospace Components, Valves, Shafts, Fasteners, Pump Parts, Chemical Equipment, Marine Components |
High strength and hardness after precipitation hardening
Good general corrosion resistance
Excellent combination of strength and toughness
Good dimensional stability during heat treatment
Available in multiple heat-treatment conditions
Good fabrication and machining characteristics
Suitable for highly stressed structural components
Reliable performance across a wide range of industrial applications
Chemical Composition (%)
Mechanical Properties (Typical)
Element | Composition (%) |
Fe | Balance |
Cr | 15.00–17.50 |
Ni | 3.00–5.00 |
Cu | 3.00–5.00 |
Mn | ≤ 1.00 |
Si | ≤ 1.00 |
Nb + Ta | 0.15–0.45 |
C | ≤ 0.07 |
P | ≤ 0.040 |
S | ≤ 0.030 |
Property | Typical / Minimum Value |
Tensile Strength | ≥ 1,310 MPa |
Yield Strength (0.2% Offset) | ≥ 1,170 MPa |
Elongation | ≥ 10% |
Hardness | Approx. 40 HRC |
Density | Approx. 7.8 g/cm³ |
Mechanical properties vary depending on product form, section size and heat-treatment condition. Values should be confirmed against the applicable material specification.