EN-GJL-250 (EN 5.1301) Grey Cast Iron Casting Material
Grey Cast Iron
Introduction
EN-GJL-250 is a grey cast iron grade covered by EN 1561. Typical applications include machine beds, gearbox housings and pump components.
| Field | Value |
|---|---|
| Designation | EN-GJL-250 (EN 5.1301) |
| Material Type | Cast Iron |
| Sub Type | Grey Cast Iron |
| Product Form | casting |
Manufacturing Process
Sand Casting
Shell Molding Casting
Lost Foam Casting
Equivalent Materials
| Standard | Material Grade |
|---|---|
| NBN 830-01 | FGG25 |
| GB/T 9439 | HT250 |
| UNF | FG25 |
| NS11 100 | SJG250 |
| JIS G5501 | FC250 |
| DIN 1691 | GG25 |
| ASTM A48 | 250 (No. 35) |
| SS 14 01 | O125 |
| GB 9439 | HT250 |
| BS 1452 | 250 |
| AS 1830 | 250 |
| SAE J431 | G11H20 |
| ASTM A48M | 250 |
| UNI 5007 | G25 |
| IS 210 | FG260 |
| NG A32-101 | FGL250 |
| ISO 185 | ISO 185/JL/250 |
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| EN 1561 | Founding - Grey cast irons | 2023 | EN-GJL-250 | — |
Related Casting Products
Physical Properties
N/A
Chemical Composition
No specified chemical composition limits in EN 1561
Heat Treatment
EN 1561–2023
Heat treatment for special applications may be agreed when the order is accepted; no fixed cycle is prescribed. If heat treatment is applied, representative samples must receive the same treatment as the castings.
Mechanical Properties
Core Mechanical Properties
Conditions are not identical. Compare each stated condition and applicability separately.
EN 1561 — 2023 · Table 1 — Normative
| Property | Tensile classification |
|---|---|
| Tensile Strength | 250–350 MPa[1] 250–350 MPa[2] 250–350 MPa[3] 250–350 MPa[4] 250–350 MPa[5] 250–350 MPa[6] ≥ 210 MPa[7] ≥ 190 MPa[8] ≥ 170 MPa[9] ≥ 160 MPa[10] |
- Sand moulds or moulds with comparable thermal behaviour; properties refer only to the stated sample type and wall-thickness range
EN 1561 — 2023 · Table A.1 — Informative
| Property | Informative 30 mm sample data |
|---|---|
| Compressive Strength | 3.01 * Rm |
| Shear Strength | 290 MPa |
- Cast sample with 30 mm as-cast diameter; Informative Annex A.1 reference only, not an acceptance requirement. 0.1 percent proof properties are not 0.2 percent yield strength.; Informative reference value; not an acceptance requirement
EN 1561 — 2023 · Table E.1 — Informative
| Property | Informative casting-cut guidance |
|---|---|
| Tensile Strength | ≥ 250 MPa[11] ≥ 225 MPa[12] ≥ 195 MPa[13] ≥ 175 MPa[14] ≥ 160 MPa[15] ≥ 155 MPa[16] |
- Test piece cut from a casting; source designation EN-GJL-250C uses the same material number; Table E.1 is guidance only for simple uniform-wall castings. Required minimum at a stated location is agreed with manufacturer; for thickness above 200 mm the sample and minimum values shall be agreed. No unconditional minimum is imposed.; Informative reference value; not an acceptance requirement
Additional Mechanical Properties
Other Mechanical Properties
EN 1561 — 2023 · Table A.1 — Informative
| Property | Informative 30 mm sample data |
|---|---|
| Torsional Strength | 1.36 * Rm |
- Cast sample with 30 mm as-cast diameter; Informative Annex A.1 reference only, not an acceptance requirement. 0.1 percent proof properties are not 0.2 percent yield strength.; Informative reference value; not an acceptance requirement
Notes
EN 1561 · Edition 2023
[1] Tensile Strength: wall thickness ≤ 10 mm; Separately cast or side-by-side cast sample; Grade maximum tensile strength is the minimum plus 100 MPa. The lower thickness bound is inclusive only where identified by the Specimen/sample size is selected as prescribed in the sampling clauses.
[2] Tensile Strength: wall thickness ≤ 20 mm; Separately cast or side-by-side cast sample; Grade maximum tensile strength is the minimum plus 100 MPa. The lower thickness bound is inclusive only where identified by the Specimen/sample size is selected as prescribed in the sampling clauses.
[3] Tensile Strength: wall thickness ≤ 40 mm; Separately cast or side-by-side cast sample; Grade maximum tensile strength is the minimum plus 100 MPa. The lower thickness bound is inclusive only where identified by the Specimen/sample size is selected as prescribed in the sampling clauses.
[4] Tensile Strength: wall thickness ≤ 80 mm; Separately cast or side-by-side cast sample; Grade maximum tensile strength is the minimum plus 100 MPa. The lower thickness bound is inclusive only where identified by the Specimen/sample size is selected as prescribed in the sampling clauses.
[5] Tensile Strength: wall thickness ≤ 150 mm; Separately cast or side-by-side cast sample; Grade maximum tensile strength is the minimum plus 100 MPa. The lower thickness bound is inclusive only where identified by the Specimen/sample size is selected as prescribed in the sampling clauses.
[6] Tensile Strength: wall thickness ≤ 300 mm; Separately cast or side-by-side cast sample; Grade maximum tensile strength is the minimum plus 100 MPa. The lower thickness bound is inclusive only where identified by the Specimen/sample size is selected as prescribed in the sampling clauses.
[7] Tensile Strength: wall thickness ≤ 40 mm; Cast-on sample
[8] Tensile Strength: wall thickness ≤ 80 mm; Cast-on sample
[9] Tensile Strength: wall thickness ≤ 150 mm; Cast-on sample
[10] Tensile Strength: wall thickness ≤ 300 mm; Cast-on sample
[11] Tensile Strength: wall thickness ≤ 10 mm
[12] Tensile Strength: wall thickness ≤ 20 mm
[13] Tensile Strength: wall thickness ≤ 40 mm
[14] Tensile Strength: wall thickness ≤ 80 mm
[15] Tensile Strength: wall thickness ≤ 150 mm
[16] Tensile Strength: wall thickness ≤ 300 mm
Welding Conditions
N/A
Applications
Grey cast iron EN 1561 EN-GJL-250 is used for machine beds, gearbox housings and pump components. Documented foundry examples also include air-conditioning compressor bodies and crankshafts, hydraulic handling-equipment levers and engine flywheel rings. Other cast components used in this material family include machine-tool bases, gearbox cases, bearing housings and stationary frames.
Typical settings include industrial and agricultural machinery, equipment manufacture and maintenance replacement. Component duty and casting section govern the choice of grade.
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Email Us for a QuoteLast Updated: November 6, 2026