Introduction
G17Mn5 (EN 1.1131) is a low-alloy steel casting grade specified in EN 10213. The standard defines delivery conditions and engineering requirements for pressure-containing components. Casting process options include Investment Casting, Shell Molding Casting and Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | G17Mn5 (EN 1.1131) |
| 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
Related Casting Products
Physical Properties
EN 10213–2007+A1:2016
| Property | Value | Note |
|---|---|---|
| Density | 7.8 kg/dm³ | Test at 20 °C |
| Thermal Expansion | 13.0 ×10⁻⁶/K | Temperature range: 20–100 °C |
| Thermal Expansion | 13.8 ×10⁻⁶/K | Temperature range: 20–300 °C |
| Thermal Expansion | 15 ×10⁻⁶/K | Temperature range: 20–500 °C |
| Thermal Conductivity | 45 W/(m·K) | Test at 50 °C |
| Specific Heat | 460 J/(kg·K) | Test at 20 °C |
| Magnetic Property | Magnetic |
Chemical Composition
| Element | EN 10213Edition 2007+A1:2016 · wt.%Cast analysis | EN 10293Edition 2015 · wt.%Cast analysis | EN 10340Edition 2007 · wt.%Cast analysis |
|---|---|---|---|
| C | 0.15–0.20 | 0.15–0.20 | 0.15–0.20 |
| Si | ≤ 0.60 | ≤ 0.60 | ≤ 0.60 |
| Mn | 1.00–1.60 | 1.00–1.60 | 1.00–1.50 |
| P | ≤ 0.020 | ≤ 0.020[1] | ≤ 0.020 |
| S | ≤ 0.020[2] | ≤ 0.020[3] | ≤ 0.020[4] |
| Cr | ≤ 0.30[5] | ≤ 0.30[6] | ≤ 0.30[7] |
| Ni | ≤ 0.40[5] | ≤ 0.40[6] | ≤ 0.40[7] |
| Mo | ≤ 0.12[5] | ≤ 0.12[6] | ≤ 0.12[7] |
| Cu | ≤ 0.30[5] | ≤ 0.30[6] | ≤ 0.30[7] |
| V | ≤ 0.03[5] | ≤ 0.03[6] | ≤ 0.03[7] |
Notes
EN 10293 · Edition 2015
[1] P: A maximum phosphorus content of 0.025 wt.% is permitted by agreement between purchaser and manufacturer.
[3] S: For castings of ruling thickness <28 mm, sulfur up to 0.030 wt.% is permitted.
[6] Cr/Ni/Mo/Cu/V: Applies only where unspecified in unless otherwise agreed; no intentional addition except for finishing the heat.
EN 10213 · Edition 2007+A1:2016
[2] S: For ruling thickness < 28 mm, sulfur up to 0.030 wt.% is permitted.
[5] Cr/Ni/Mo/Cu/V: Cr + Mo + Ni + V + Cu ≤ 1.00 wt.%.
EN 10340 · Edition 2007
[4] S: For castings of ruling thickness <28 mm, sulfur up to 0.030 wt.% is permitted.
[7] Cr/Ni/Mo/Cu/V: Cr + Mo + Ni + V + Cu ≤1.00 wt.%.
Heat Treatment
EN 10213–2007+A1:2016 · +QT
EN 10293–2015 · +QT
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 920–980 °C | air or liquid |
| 2 | : tempering | 600–700 °C | — |
EN 10340–2007 · +QT
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 920–980 °C | air or liquid |
| 2 | : tempering | 600–700 °C | — |
Notes
EN 10213 · Edition 2007+A1:2016
[1] +QT: Treatment temperatures are given for information; required delivery condition is specified separately.
Mechanical Properties
| Property | EN 10213Edition 2007+A1:2016 | EN 10293Edition 2015[1] | EN 10340Edition 2007[2] |
|---|---|---|---|
| Yield Strength (Rp0.2) | ≥ 240 MPa[3] | ≥ 240 MPa[4] | ≥ 240 MPa[5] |
| Tensile Strength | 450–600 MPa[3] | 450–600 MPa[4] | 450–600 MPa[5] |
| Elongation | ≥ 24 %[3] | ≥ 24 %[4] | ≥ 24 %[5] |
| Impact Energy | ≥ 27 J[6] | ≥ 27 J[7] ≥ 70 J[4] | ≥ 27 J[8] ≥ 70 J[5] |
Notes
EN 10293 · Edition 2015
[1] All properties in this column: wall thickness ≤ 50 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.
[4] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy: Room temperature
[7] Impact Energy: Test at -40 °C
EN 10340 · Edition 2007
[2] All properties in this column: wall thickness ≤ 50 mm; Test block of relevant thickness; maximum thickness 150 mm; Yield and tensile strength also apply to the casting up to the maximum relevant wall thickness.
[5] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy: Room temperature
[8] Impact Energy: Test at -40 °C
EN 10213 · Edition 2007+A1:2016
[3] Yield Strength (Rp0.2)/Tensile Strength/Elongation: wall thickness ≤ 50 mm; Properties verified on test blocks of thickness up to 150 mm; applicability to casting wall thickness as stated. Larger governing thickness requires agreement.; Room temperature
[6] Impact Energy: Test at -40 °C; Test block; maximum thickness 150 mm; Specified low-temperature impact requirement
Welding Conditions
EN 10293–2015
| Requirement | Value |
|---|---|
| Preheat | 20–150 °C[3] |
| Interpass Temperature | ≤ 350 °C |
| Post-weld Heat Treatment | No post-weld heat treatment necessary |
EN 10340–2007
| Requirement | Value |
|---|---|
| Preheat | 20–150 °C[4] |
| Interpass Temperature | ≤ 350 °C |
| Post-weld Heat Treatment | No post-weld heat treatment necessary |
Notes
EN 10213 · Edition 2007+A1:2016
[1] Preheat: Production welding by the foundry; ferritic/martensitic guidance is informative.; Preheat temperature depends on casting geometry, thickness and climatic conditions.
[2] Interpass Temperature: Production welding by the foundry; ferritic/martensitic guidance is informative.
EN 10293 · Edition 2015
[3] Preheat: Preheat depends on casting geometry, thickness and climatic conditions.
EN 10340 · Edition 2007
[4] Preheat: Preheat depends on casting geometry, thickness and climatic conditions.
Applications
At the casting-family level, typical applications include valve bodies, pump casings and other pressure-containing components. Material selection should account for service temperature, loading and the specified delivery condition.
Last Updated: October 13, 2026