Introduction
G24Mn6 (EN 1.1118) 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 | G24Mn6 (EN 1.1118) |
| 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
N/A
Chemical Composition
| Element | EN 10213Edition 2007+A1:2016 · wt.%Cast analysis | EN 10293Edition 2015 · wt.%Cast analysis | EN 10340Edition 2007 · wt.%Cast analysis |
|---|---|---|---|
| C | 0.20–0.25 | 0.20–0.25 | 0.20–0.25 |
| Si | ≤ 0.60 | ≤ 0.60 | ≤ 0.60 |
| Mn | 1.50–1.80 | 1.50–1.80 | 1.50–1.80 |
| P | ≤ 0.020[1] | ≤ 0.020[2] | ≤ 0.020 |
| S | ≤ 0.015 | ≤ 0.015 | ≤ 0.015 |
| Cr | ≤ 0.30 | ≤ 0.30[3] | ≤ 0.30[4] |
| Ni | ≤ 0.40 | ≤ 0.40[3] | ≤ 0.40[4] |
| Mo | ≤ 0.15 | ≤ 0.15[3] | ≤ 0.12[4] |
| Cu | ≤ 0.30 | ≤ 0.30[3] | ≤ 0.30[4] |
| V | ≤ 0.05 | ≤ 0.05[3] | ≤ 0.03[4] |
Notes
EN 10213 · Edition 2007+A1:2016
[1] P: A phosphorus maximum of 0.025 wt.% may be agreed between purchaser and manufacturer.
EN 10293 · Edition 2015
[2] P: A maximum phosphorus content of 0.025 wt.% is permitted by agreement between purchaser and manufacturer.
[3] Cr/Ni/Mo/Cu/V: Applies only where unspecified in unless otherwise agreed; no intentional addition except for finishing the heat.
EN 10340 · Edition 2007
[4] Cr/Ni/Mo/Cu/V: Cr + Mo + Ni + V + Cu ≤1.00 wt.%.
Heat Treatment
EN 10213–2007+A1:2016 · +QT2
EN 10213–2007+A1:2016 · +QT3
EN 10293–2015 · +QT1
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–950 °C | liquid |
| 2 | : tempering | 520–570 °C | — |
EN 10293–2015 · +QT2
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–950 °C | liquid |
| 2 | : tempering | 600–650 °C | — |
EN 10293–2015 · +QT3
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–950 °C | liquid |
| 2 | : tempering | 650–680 °C | — |
EN 10340–2007 · +QT1
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–950 °C | liquid |
| 2 | : tempering | 520–570 °C | — |
EN 10340–2007 · +QT2
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–950 °C | liquid |
| 2 | : tempering | 600–650 °C | — |
EN 10340–2007 · +QT3
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | : quenching | 880–950 °C | liquid |
| 2 | : tempering | 650–680 °C | — |
Notes
EN 10213 · Edition 2007+A1:2016
[1] +QT2: Treatment temperatures are given for information; required delivery condition is specified separately.
[2] +QT3: Treatment temperatures are given for information; required delivery condition is specified separately.
Mechanical Properties
Conditions are not identical. Compare each stated condition and applicability separately.
| Property | EN 10213Edition 2007+A1:2016+QT2 | EN 10213Edition 2007+A1:2016+QT3 | EN 10293Edition 2015+QT1[1] | EN 10293Edition 2015+QT2[2] | EN 10293Edition 2015+QT3[3] | EN 10340Edition 2007+QT1[4] | EN 10340Edition 2007+QT2[5] | EN 10340Edition 2007+QT3[6] |
|---|---|---|---|---|---|---|---|---|
| Yield Strength (Rp0.2) | ≥ 500 MPa[7] | ≥ 400 MPa[8] | ≥ 550 MPa[9] | ≥ 500 MPa[10] | ≥ 400 MPa[11] | ≥ 550 MPa[12] | ≥ 500 MPa[13] | ≥ 400 MPa[14] |
| Tensile Strength | 650–800 MPa[7] | 600–800 MPa[8] | 700–800 MPa[9] | 650–800 MPa[10] | 600–800 MPa[11] | 700–800 MPa[12] | 650–800 MPa[13] | 600–800 MPa[14] |
| Elongation | ≥ 15 %[7] | ≥ 18 %[8] | ≥ 12 %[9] | ≥ 15 %[10] | ≥ 18 %[11] | ≥ 12 %[12] | ≥ 15 %[13] | ≥ 18 %[14] |
| Impact Energy | ≥ 50 J[7] ≥ 27 J[15] | ≥ 60 J[8] ≥ 27 J[16] | ≥ 27 J[17] | ≥ 27 J[18] | ≥ 27 J[19] | ≥ 27 J[20] | ≥ 27 J[21] | ≥ 27 J[22] |
Notes
EN 10293 · Edition 2015
[1] All properties in this column; +QT1: 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.
[2] All properties in this column; +QT2: wall thickness ≤ 100 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.
[3] All properties in this column; +QT3: 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.
[9] Yield Strength (Rp0.2)/Tensile Strength/Elongation; +QT1: Room temperature
[10] Yield Strength (Rp0.2)/Tensile Strength/Elongation; +QT2: Room temperature
[11] Yield Strength (Rp0.2)/Tensile Strength/Elongation; +QT3: Room temperature
[17] Impact Energy; +QT1: Test at -20 °C
[18] Impact Energy; +QT2: Test at -30 °C
[19] Impact Energy; +QT3: Test at -30 °C
EN 10340 · Edition 2007
[4] All properties in this column; +QT1: 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] All properties in this column; +QT2: wall thickness ≤ 100 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.
[6] All properties in this column; +QT3: wall thickness ≤ 150 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.
[12] Yield Strength (Rp0.2)/Tensile Strength/Elongation; +QT1: Room temperature
[13] Yield Strength (Rp0.2)/Tensile Strength/Elongation; +QT2: Room temperature
[14] Yield Strength (Rp0.2)/Tensile Strength/Elongation; +QT3: Room temperature
[20] Impact Energy; +QT1: Test at -20 °C
[21] Impact Energy; +QT2: Test at -30 °C
[22] Impact Energy; +QT3: Test at -30 °C
EN 10213 · Edition 2007+A1:2016
[7] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy; +QT2: wall thickness ≤ 100 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
[8] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy; +QT3: wall thickness ≤ 150 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
[15] Impact Energy; +QT2: Test at -30 °C; Test block; maximum thickness 150 mm; Specified low-temperature impact requirement
[16] Impact Energy; +QT3: Test at -30 °C; Test block; maximum thickness 150 mm; Specified low-temperature impact requirement
Welding Conditions
EN 10213–2007+A1:2016
EN 10293–2015
| Requirement | Value |
|---|---|
| Preheat | 20–150 °C[4] |
| Interpass Temperature | ≤ 350 °C |
| Post-weld Heat Treatment | Post-weld temperature 20–50 °C below the base-material tempering temperature |
EN 10340–2007
| Requirement | Value |
|---|---|
| Preheat | 20–150 °C[5] |
| 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.
[3] Post-weld Heat Treatment: Production welding by the foundry; ferritic/martensitic guidance is informative.; In general, production welds are major when prepared cavity depth exceeds 40% of the wall thickness; minor weld corrosion conditions may require special agreement.
EN 10293 · Edition 2015
[4] Preheat: Preheat depends on casting geometry, thickness and climatic conditions.
EN 10340 · Edition 2007
[5] 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