GX5CrNiCu16-4 (EN 1.4525) Precipitation-Hardening Stainless Steel Casting Material
Precipitation-Hardening Stainless Steel
Introduction
GX5CrNiCu16-4 is a stainless steel grade specified in EN 10283 for corrosion-resistant cast components. Casting process options include Investment Casting, Shell Molding Casting and Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | GX5CrNiCu16-4 (EN 1.4525) |
| Material Type | Stainless Steel |
| Sub Type | Precipitation-Hardening Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Grades
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| EN 10283 | Corrosion resistant steel castings | 2019 | GX5CrNiCu16-4 | — |
Related Casting Products
Physical Properties
EN 10283–2019
| Property | Value | Note |
|---|---|---|
| Density | 7.8 kg/dm³[1] | Test at 20 °C |
| Specific Heat | 460 J/(kg·K)[1] | Test at 20 °C |
| Thermal Conductivity | 17.5 W/(m·K)[1] | Test at 50 °C |
| Thermal Conductivity | 18.5 W/(m·K)[1] | Test at 100 °C |
| Thermal Expansion | 11.8 ×10⁻⁶/K[1] | Temperature range: 20–100 °C |
| Thermal Expansion | 12.8 ×10⁻⁶/K[1] | Temperature range: 20–300 °C |
| Thermal Expansion | 13.4 ×10⁻⁶/K[1] | Temperature range: 20–500 °C |
| Density | 7.8 kg/dm³[2] | Test at 20 °C |
| Specific Heat | 460 J/(kg·K)[2] | Test at 20 °C |
| Thermal Conductivity | 17.5 W/(m·K)[2] | Test at 50 °C |
| Thermal Conductivity | 18.5 W/(m·K)[2] | Test at 100 °C |
| Thermal Expansion | 10.6 ×10⁻⁶/K[2] | Temperature range: 20–100 °C |
| Thermal Expansion | 11.3 ×10⁻⁶/K[2] | Temperature range: 20–300 °C |
| Thermal Expansion | 12 ×10⁻⁶/K[2] | Temperature range: 20–500 °C |
Notes
EN 10283 · Edition 2019
[1] Density/Specific Heat/Thermal Conductivity/Thermal Expansion: Delivery condition +QT1
[2] Density/Specific Heat/Thermal Conductivity/Thermal Expansion: Delivery condition +QT2
Chemical Composition
| Element | EN 10283Edition 2019 · wt.%Cast analysis |
|---|---|
| C | ≤ 0.07 |
| Si | ≤ 0.80 |
| Mn | ≤ 1.00 |
| P | ≤ 0.035 |
| S | ≤ 0.025 |
| Cr | 15.00–17.00 |
| Ni | 3.50–5.50 |
| Mo | ≤ 0.80 |
| Cu | 2.50–4.00 |
| N | ≤ 0.05 |
| Nb | ≤ 0.35 |
| V | ≤ 0.08[1] |
Notes
EN 10283 · Edition 2019
[1] V: Applies unless otherwise agreed; unspecified elements shall not be intentionally added without purchaser agreement except for finishing the heat.
Heat Treatment
EN 10283–2019 · +QT1
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | quenching | 1020–1070 °C | air or liquid |
| 2 | tempering | 560–610 °C | — |
EN 10283–2019 · +QT2
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | quenching | 1020–1070 °C | air or liquid |
| 2 | tempering | 460–500 °C | — |
Mechanical Properties
Conditions are not identical. Compare each stated condition and applicability separately.
| Property | EN 10283Edition 2019+QT1[1] | EN 10283Edition 2019+QT2[2] |
|---|---|---|
| Yield Strength (Rp0.2) | ≥ 750 MPa | ≥ 1000 MPa |
| Tensile Strength | ≥ 900 MPa | ≥ 1100 MPa |
| Elongation | ≥ 12 % | ≥ 5 % |
| Impact Energy | ≥ 20 J[3] | — / Not specified |
Notes
EN 10283 · Edition 2019
[1] All properties in this column; +QT1: wall thickness ≤ 300 mm; Test block; maximum thickness 150 mm; Room temperature; Yield and tensile strength also apply to the casting up to the maximum specified wall thickness.
[2] All properties in this column; +QT2: wall thickness ≤ 300 mm; Test block; maximum thickness 150 mm; Room temperature; Yield and tensile strength also apply to the casting up to the maximum specified wall thickness.
[3] Impact Energy; +QT1: KV2 as specified in
Welding Conditions
EN 10283–2019
Notes
EN 10283 · Edition 2019
[1] Preheat: Preheat depends on casting geometry, thickness and climatic conditions.
[2] Post-weld Heat Treatment: minor welds
[3] Post-weld Heat Treatment: major welds
Applications
Typical casting applications include high-strength cast structural components and actuators.
Last Updated: October 13, 2026