Introduction
G20NiMoCr4 (EN 1.6750) is a low-alloy steel casting grade specified in EN 10293. The standard covers steel castings for general engineering uses and defines the applicable delivery conditions and engineering requirements. Casting process options include Investment Casting, Shell Molding Casting and Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | G20NiMoCr4 (EN 1.6750) |
| Material Type | Alloy Steel |
| Sub Type | Low-Alloy 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 10293 | Steel castings — Steel castings for general engineering uses | 2015 | G20NiMoCr4 | — |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | EN 10293Edition 2015 · wt.%Cast analysis |
|---|---|
| C | 0.17–0.23 |
| Si | ≤ 0.60 |
| Mn | 0.80–1.20 |
| P | ≤ 0.025 |
| S | ≤ 0.015[1] |
| Cr | 0.30–0.50 |
| Ni | 0.80–1.20 |
| Mo | 0.40–0.80 |
| Cu | ≤ 0.30[2] |
| V | ≤ 0.05[2] |
Notes
EN 10293 · Edition 2015
[1] S: For castings of ruling thickness <28 mm, sulfur up to 0.030 wt.% is permitted.
[2] Cu/V: Applies only where unspecified in unless otherwise agreed; no intentional addition except for finishing the heat.
Heat Treatment
EN 10293–2015 · +QT
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–930 °C | air or liquid |
| 2 | : tempering | 650–700 °C | — |
Mechanical Properties
| Property | EN 10293Edition 2015[1] |
|---|---|
| Yield Strength (Rp0.2) | ≥ 410 MPa[2] |
| Tensile Strength | 570–720 MPa[2] |
| Elongation | ≥ 16 %[2] |
| Impact Energy | ≥ 100 J[2] ≥ 27 J[3] |
Notes
EN 10293 · Edition 2015
[1] All properties in this column: wall thickness ≤ 150 mm; Test block of relevant thickness; maximum test-block wall thickness 150 mm; Properties apply to the casting up to the specified maximum wall thickness; above this, foreseeable lowering shall be agreed.
[2] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy: Room temperature
[3] Impact Energy: Test at -45 °C
Welding Conditions
EN 10293–2015
| Requirement | Value |
|---|---|
| Preheat | 150–300 °C[1] |
| Interpass Temperature | ≤ 350 °C |
| Post-weld Heat Treatment | Post-weld temperature 20–50 °C below the base-material tempering temperature |
Notes
EN 10293 · Edition 2015
[1] Preheat: Preheat depends on casting geometry, thickness and climatic conditions.
Applications
At the casting-family level, typical applications include machinery, automotive and railway components, agricultural equipment and mining equipment.
Last Updated: October 13, 2026