GX10NiCrSiNb32-20 (EN 1.4859) Austenitic Stainless Steel Casting Material
Austenitic Stainless Steel
Introduction
GX10NiCrSiNb32-20 is an austenitic stainless steel casting grade covered by EN 10213, EN 10295. Typical applications include heat-resistant cast components.
| Field | Value |
|---|---|
| Designation | GX10NiCrSiNb32-20 (EN 1.4859) |
| Material Type | Stainless Steel |
| Sub Type | Austenitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Materials
Similar Materials
N/A
Reference Standards
Related Casting Products
Physical Properties
| Property | Value / Unit | Note | Source |
|---|---|---|---|
| Density | 8.0 kg/dm³ | Test at 20 °C | EN 10213 |
| Thermal Expansion | 15 ×10⁻⁶/K | Temperature range: 20–300 °C | EN 10213 |
| Thermal Expansion | 16.3 ×10⁻⁶/K | Temperature range: 20–500 °C | EN 10213 |
| Thermal Conductivity | 12.1 W/(m·K) | Test at 50 °C | EN 10213 |
| Thermal Conductivity | 13.1 W/(m·K) | Test at 100 °C | EN 10213 |
| Specific Heat | 500 J/(kg·K) | Test at 20 °C | EN 10213 |
| Magnetic Property | Not or slightly magnetic | EN 10213 | |
| Density | 8.0 kg/dm³ | EN 10295 | |
| Specific Heat | 500 J/(kg·K) | Temperature: 20 °C | EN 10295 |
| Thermal Conductivity | 12.8 W/(m·K) | Temperature: 20 °C | EN 10295 |
| Thermal Conductivity | 13 W/(m·K) | Temperature: 100 °C | EN 10295 |
| Thermal Conductivity | 25.1 W/(m·K) | Temperature: 800 °C | EN 10295 |
| Thermal Expansion | 17.6 ×10⁻⁶/K | Temperature range: 20–400 °C | EN 10295 |
| Thermal Expansion | 18.7 ×10⁻⁶/K | Temperature range: 20–800 °C | EN 10295 |
| Thermal Expansion | 19.5 ×10⁻⁶/K | Temperature range: 20–1000 °C | EN 10295 |
Chemical Composition
| Element | EN 10213Edition 2007+A1:2016 · wt.%Cast analysis | EN 10295Edition 2002 · wt.%Cast analysis |
|---|---|---|
| C | 0.05–0.15 | 0.05–0.15 |
| Si | 0.50–1.50 | 0.50–1.50 |
| Mn | ≤ 2.00 | ≤ 2.00 |
| P | ≤ 0.040 | ≤ 0.040 |
| S | ≤ 0.030 | ≤ 0.030 |
| Cr | 19.00–21.00 | 19.00–21.00 |
| Ni | 31.00–33.00 | 31.00–33.00 |
| Mo | ≤ 0.50 | ≤ 0.50 |
| Cu | ≤ 0.50 | ≤ 0.25[1] |
| Nb | 0.50–1.50 | 0.50–1.50 |
| V | — / Not specified | ≤ 0.12[1] |
| W | — / Not specified | ≤ 0.60[1] |
| Co | — / Not specified | ≤ 1.00[1] |
Notes
EN 10295 · Edition 2002
[1] Cu/V/W/Co: Unless otherwise agreed: limit for element unspecified in; no intentional addition except for finishing the heat.
Heat Treatment
EN 10213–2007+A1:2016
N/A
EN 10295–2002
N/A
Mechanical Properties
Core Mechanical Properties
EN 10213 — 2007+A1:2016 · Table 3 — Normative
EN 10295 — 2002 · Table 2 — Normative
| Property | As cast / no heat treatment |
|---|---|
| Yield Strength | ≥ 180 MPa |
| Tensile Strength | ≥ 440 MPa |
| Elongation | ≥ 20 % |
- Room temperature
Additional Mechanical Properties
Elevated-Temperature Properties
Creep & Stress-Rupture Properties
| Property | Value / unit | Temperature / conditions | Nature | Source / edition | Notes |
|---|---|---|---|---|---|
| σr — mean rupture stress | 135 MPa | Temperature: 700 °C; Load time: 100 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 105 MPa | Temperature: 700 °C; Load time: 1000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σ1% — mean stress for 1% elongation | 64 MPa | Temperature: 700 °C; Load time: 10000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 84 MPa | Temperature: 800 °C; Load time: 100 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 60 MPa | Temperature: 800 °C; Load time: 1000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σ1% — mean stress for 1% elongation | 36 MPa | Temperature: 800 °C; Load time: 10000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 49 MPa | Temperature: 900 °C; Load time: 100 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 36 MPa | Temperature: 900 °C; Load time: 1000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σ1% — mean stress for 1% elongation | 15.5 MPa | Temperature: 900 °C; Load time: 10000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 26 MPa | Temperature: 1000 °C; Load time: 100 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σr — mean rupture stress | 14 MPa | Temperature: 1000 °C; Load time: 1000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
| σ1% — mean stress for 1% elongation | 5 MPa | Temperature: 1000 °C; Load time: 10000 h | Informative | EN 10295–2002 · EN 10295:2002, Annex B, Table B.1 (informative) | Mean values; ±20% scatter band; information only, not acceptance requirements; Mean creep values from a scatter band of ±20%; information only. |
Notes
EN 10213 · Edition 2007+A1:2016
[1] Yield Strength (Rp0.2)/Tensile Strength/Elongation/Impact Energy: 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
[2] Yield Strength (Rp0.2)/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
[3] Tensile Strength/Elongation: 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; For centrifugal castings in this thickness range: Rm 440–640 MPa; elongation 25%.
[4] Yield Strength (Rp0.2): Test at 100 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[5] Yield Strength (Rp0.2): Test at 200 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[6] Yield Strength (Rp0.2): Test at 300 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[7] Yield Strength (Rp0.2): Test at 400 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[8] Yield Strength (Rp0.2): Test at 500 °C; Verification of elevated-temperature yield values is subject to agreement at enquiry and order.
[9] 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
Notes
EN 10213 · Edition 2007+A1:2016
[1] Preheat: Production welding by the foundry; requirements for austenitic/austenitic-ferritic grades are normative.; Preheat temperature depends on casting geometry, thickness and climatic conditions.
[2] Interpass Temperature: Production welding by the foundry; requirements for austenitic/austenitic-ferritic grades are normative.
[3] Post-weld Heat Treatment: Production welding by the foundry; requirements for austenitic/austenitic-ferritic grades are normative.; In general, production welds are major when prepared cavity depth exceeds 40% of the wall thickness; minor weld corrosion conditions may require special agreement.
Applications
GX10NiCrSiNb32-20 is used for heat-resistant cast components. EN 10295:2002 gives an informative maximum use temperature in air of 1050 °C, based on oxidation resistance in clean natural air. These figures are not guaranteed continuous or intermittent service temperatures, or allowable temperatures under load; other atmospheres require separate assessment.
Other cast components used in this material family include furnace fixtures, support elements and burner-assembly components. These applications include industrial heating and heat-treatment equipment. Atmosphere, loading, direct flame exposure, cyclic operation and process deposits must be considered separately from an in-air reference temperature.
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