GX4NiCrCuMo30-20-4 (EN 1.4527) Austenitic Stainless Steel Casting Material
Austenitic Stainless Steel
Introduction
GX4NiCrCuMo30-20-4 is an austenitic stainless steel casting grade covered by EN 10283. Typical family applications include pump casings, impellers, valve bodies and covers.
| Field | Value |
|---|---|
| Designation | GX4NiCrCuMo30-20-4 (EN 1.4527) |
| Material Type | Stainless Steel |
| Sub Type | Austenitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Materials
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| EN 10283 | Corrosion resistant steel castings | 2019 | GX4NiCrCuMo30-20-4 | — |
Related Casting Products
Physical Properties
| Property | Value / Unit | Note | Source |
|---|---|---|---|
| Density | 8.0 kg/dm³ | Test at 20 °C | EN 10283 |
| Specific Heat | 500 J/(kg·K) | Test at 20 °C | EN 10283 |
| Thermal Conductivity | 15 W/(m·K) | Test at 50 °C | EN 10283 |
| Thermal Conductivity | 16 W/(m·K) | Test at 100 °C | EN 10283 |
| Thermal Expansion | 14.5 ×10⁻⁶/K | Temperature range: 20–100 °C | EN 10283 |
| Thermal Expansion | 16.2 ×10⁻⁶/K | Temperature range: 20–300 °C | EN 10283 |
| Thermal Expansion | 17 ×10⁻⁶/K | Temperature range: 20–500 °C | EN 10283 |
Chemical Composition
| Element | EN 10283Edition 2019 · wt.%Cast analysis |
|---|---|
| C | ≤ 0.06 |
| Si | ≤ 1.50 |
| Mn | ≤ 1.50 |
| P | ≤ 0.040 |
| S | ≤ 0.030 |
| Cr | 19.00–22.00 |
| Ni | 27.50–30.50 |
| Mo | 2.00–3.00 |
| Cu | 3.00–4.00 |
Heat Treatment
EN 10283–2019 · +AT
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | solution annealing | 1140–1180 °C | water |
Mechanical Properties
Core Mechanical Properties
EN 10283 — 2019 · Table 2 — Normative
| Property | +AT |
|---|---|
| Yield Strength (Rp0.2) | ≥ 170 MPa |
| Yield Strength (Rp1.0) | ≥ 195 MPa |
| Tensile Strength | ≥ 430 MPa |
| Elongation | ≥ 35 % |
| Impact Energy | ≥ 60 J[1] |
- wall thickness ≤ 150 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.
Notes
EN 10283 · Edition 2019
[1] Impact Energy: 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; Air quenching may be agreed for very small, thin castings according to corrosion conditions.
[3] Post-weld Heat Treatment: major welds; Air quenching may be agreed for very small, thin castings according to corrosion conditions.
Applications
Austenitic stainless steel EN 10283 GX4NiCrCuMo30-20-4 belongs to a corrosion-resistant steel casting family typically used for components exposed to corrosive environments in general engineering service. Other cast components used in this material family include pump casings, impellers, valve bodies and covers. Typical settings include chemical and pharmaceutical processing, pulp-and-paper plants and selected water-handling systems.
Suitability for a particular acid, concentration or temperature remains grade- and process-specific.
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Email Us for a QuoteLast Updated: November 6, 2026