G17CrMo9-10 (EN 1.7379) Low-Alloy Steel Casting Material
Low-Alloy Steel
Introduction
G17CrMo9-10 is a low-alloy steel casting grade covered by EN 10213, EN 10293. Typical family applications include valve bodies, pump casings and fittings.
| Field | Value |
|---|---|
| Designation | G17CrMo9-10 (EN 1.7379) |
| 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
Related Casting Products
Physical Properties
| Property | Value / Unit | Note | Source |
|---|---|---|---|
| Density | 7.85 kg/dm³ | Test at 20 °C | EN 10213 |
| Thermal Expansion | 11.8 ×10⁻⁶/K | Temperature range: 20–100 °C | EN 10213 |
| Thermal Expansion | 12.6 ×10⁻⁶/K | Temperature range: 20–300 °C | EN 10213 |
| Thermal Expansion | 13.4 ×10⁻⁶/K | Temperature range: 20–500 °C | EN 10213 |
| Specific Heat | 460 J/(kg·K) | Test at 20 °C | EN 10213 |
| Magnetic Property | Magnetic | EN 10213 |
Chemical Composition
| Element | EN 10213Edition 2007+A1:2016 · wt.%Cast analysis | EN 10293Edition 2015 · wt.%Cast analysis |
|---|---|---|
| C | 0.13–0.20 | 0.13–0.20 |
| Si | ≤ 0.60 | ≤ 0.60 |
| Mn | 0.50–0.90 | 0.50–0.90 |
| P | ≤ 0.020 | ≤ 0.025 |
| S | ≤ 0.020[1] | ≤ 0.020[2] |
| Cr | 2.00–2.50 | 2.00–2.50 |
| Ni | ≤ 0.40 | ≤ 0.40[3] |
| Mo | 0.90–1.20 | 0.90–1.20 |
| Cu | ≤ 0.30 | ≤ 0.30[3] |
| V | ≤ 0.05 | ≤ 0.05[3] |
Notes
EN 10213 · Edition 2007+A1:2016
[1] S: For ruling thickness < 28 mm, sulfur up to 0.030 wt.% is permitted.
EN 10293 · Edition 2015
[2] S: For castings of ruling thickness <28 mm, sulfur up to 0.030 wt.% is permitted.
[3] Ni/Cu/V: Applies only where unspecified in unless otherwise agreed; no intentional addition except for finishing the heat.
Heat Treatment
EN 10213–2007+A1:2016 · +QT
EN 10293–2015 · +QT
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Informative: quenching | 930–970 °C | air or liquid |
| 2 | Informative: tempering | 680–740 °C | — |
Notes
EN 10213 · Edition 2007+A1:2016
[1] +QT: Treatment temperatures are given for information; required delivery condition is specified separately.
Mechanical Properties
Core Mechanical Properties
EN 10213 — 2007+A1:2016 · Table 3 — Normative
EN 10293 — 2015 · Table 3 — Normative
| Property | +QT |
|---|---|
| Yield Strength (Rp0.2) | ≥ 400 MPa |
| Tensile Strength | 590–740 MPa |
| Elongation | ≥ 18 % |
| Impact Energy | ≥ 40 J |
- wall thickness ≤ 150 mm; 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.
Additional Mechanical Properties
Notes
EN 10213 · Edition 2007+A1:2016
[1] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy: 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
[2] Yield Strength (Rp0.2): Test at 200 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[3] Yield Strength (Rp0.2): Test at 300 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[4] Yield Strength (Rp0.2): Test at 350 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[5] Yield Strength (Rp0.2): Test at 400 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[6] Yield Strength (Rp0.2): Test at 450 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[7] Yield Strength (Rp0.2): Test at 500 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[8] Yield Strength (Rp0.2): Test at 550 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
Welding Conditions
EN 10213–2007+A1:2016
EN 10293–2015
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.
[5] Post-weld Heat Treatment: Post-weld temperature 20–50 °C below the base-material tempering temperature
Applications
Typical cast components in this material family include valve bodies, pump casings and fittings. Applications include industrial process plants, heating circuits and power-generation equipment. Service medium, temperature, material condition and the finished equipment design determine the permitted duty; the grade name alone is not an operating rating.
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Email Us for a QuoteLast Updated: November 6, 2026