G28Mn6 (EN 1.1165) Low-Alloy Steel Casting Material
Low-Alloy Steel
Introduction
G28Mn6 is a low-alloy steel casting grade covered by EN 10293. Typical family applications include gear-related castings, couplings, housings, connecting parts and structural supports.
| Field | Value |
|---|---|
| Designation | G28Mn6 (EN 1.1165) |
| Material Type | Alloy Steel |
| Sub Type | Low-Alloy Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Materials
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 | G28Mn6 | — |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | EN 10293Edition 2015 · wt.%Cast analysis |
|---|---|
| C | 0.25–0.32 |
| Si | ≤ 0.60 |
| Mn | 1.20–1.80 |
| P | ≤ 0.035 |
| S | ≤ 0.030 |
| Cr | ≤ 0.30[1] |
| Ni | ≤ 0.40[1] |
| Mo | ≤ 0.15[1] |
| Cu | ≤ 0.30[1] |
| V | ≤ 0.05[1] |
Notes
EN 10293 · Edition 2015
[1] Cr/Ni/Mo/Cu/V: Applies only where unspecified in unless otherwise agreed; no intentional addition except for finishing the heat.
Heat Treatment
EN 10293–2015 · +N
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Informative: normalizing | 880–950 °C | air |
EN 10293–2015 · +QT1
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Informative: quenching | 880–950 °C | liquid |
| 2 | Informative: tempering | 630–680 °C | — |
EN 10293–2015 · +QT2
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Informative: quenching | 880–950 °C | liquid |
| 2 | Informative: tempering | 580–630 °C | — |
Mechanical Properties
Core Mechanical Properties
Conditions are not identical. Compare each stated condition and applicability separately.
EN 10293 — 2015 · Table 3 — Normative
| Property | +N | +QT1 | +QT2 |
|---|---|---|---|
| Yield Strength (Rp0.2) | ≥ 260 MPa | ≥ 450 MPa | ≥ 550 MPa |
| Tensile Strength | 520–670 MPa | 600–750 MPa | 700–850 MPa |
| Elongation | ≥ 18 % | ≥ 14 % | ≥ 10 % |
| Impact Energy | ≥ 27 J | ≥ 35 J | ≥ 31 J |
- Test block of relevant thickness; maximum test-block wall thickness 150 mm; Room temperature; Properties apply to the casting up to the specified maximum wall thickness; above this, foreseeable lowering shall be agreed.
- +N: wall thickness ≤ 250 mm
- +QT1: wall thickness ≤ 100 mm
- +QT2: wall thickness ≤ 50 mm
Welding Conditions
EN 10293–2015
| Requirement | Value |
|---|---|
| Preheat | 20–150 °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
For low-alloy steel EN 10293 G28Mn6, typical cast components in this material family include gear-related castings, couplings, housings, connecting parts and structural supports. Applications include industrial machinery, mining, agricultural and railway equipment, construction machinery and power-transmission assemblies. The specified material condition and component duty remain important; no unverified wear-life or low-temperature rating is implied.
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