4Cr14Ni14W2Mo Stainless Steel Wire

This austenitic stainless steel wire exhibits exceptional heat resistance, corrosion resistance, and mechanical strength due to its high chromium (Cr) and nickel (Ni) content, supplemented by tungsten (W) and molybdenum (Mo) for enhanced performance in extreme environments. It is widely used in high-temperature applications and corrosive media handling.

Chemical Composition (wt%)

Element	Content (%)
Carbon (C)	≤0.040
Silicon (Si)	≤1.00
Manganese (Mn)	≤2.00
Phosphorus (P)	≤0.045
Sulfur (S)	≤0.030
Chromium (Cr)	13.0–15.0
Nickel (Ni)	12.0–16.0
Molybdenum (Mo)	1.50–2.50
Tungsten (W)	1.50–2.50

Parameter	Value/Range
Diameter Range	0.1–10.0 mm
Hardness (HB)	≤250
Density	7.9 g/cm³
Yield Strength	≥300 MPa
Tensile Strength	≥600 MPa

I. Performance characteristics of 4Cr14Ni14W2Mo stainless steel wire

1. High temperature performance

(1) Maintains high yield strength (≥315 MPa) at 600-700℃, has oxidation resistance below 800℃, and is suitable for aircraft engine blades and gas turbine components.

(2) Low creep rate at 650℃, suitable for high temperature and high pressure pipelines and fasteners.

2. Mechanical and corrosion resistance

(1) Tensile strength ≥705 MPa, elongation ≥20%, tungsten element improves wear resistance, suitable for valves and shaft parts.

(2) High gas corrosion resistance below 900℃, suitable for corrosive environments such as chemical and petroleum.

3. Heat treatment characteristics

(1) Solution treatment (oil cooling at 1020-1050℃) can refine grains, and aging treatment (tempering at 680-720℃) precipitates carbides to enhance hardness.

(2) Annealing process (820-850℃ rapid cooling) improves workability, but welding requires preheating and subsequent heat treatment.

II. Main Applications

(1) Power machinery: aircraft engine intake/exhaust valves, turbine blades (600-700℃ high temperature environment).

(2) Energy and chemical industry: oil refining equipment, nuclear power plant pipelines (resistant to chloride corrosion and high temperature and high pressure).

(3) Precision parts: medical equipment, oil valves (both wear resistance and biocompatibility).

(4) Mold manufacturing: titanium alloy creep forming molds, glass forming molds (strong oxidation resistance).