40CrMoV4-6 vs EN-GJL-250: 10% composition overlap. Significantly different materials serving different application areas.
40CrMoV4-6 vs EN-GJL-250
Side-by-side chemical composition and mechanical property comparison.
Overview
40CrMoV4-6
1.7711
Chromium-molybdenum-vanadium creep-resisting steel for high-temperature fasteners and bolts per EN 10269. Excellent creep resistance up to 540°C with tensile strength 850–1000 MPa after quenching and tempering. Widely used for steam turbine bolts, pressure vessel fasteners, and power generation components. Equivalent to ASTM A193 Grade B16.
EN-GJL-250
0.6025
Grey cast iron with lamellar graphite and minimum tensile strength 250 MPa. The most widely used grey cast iron grade worldwide. Predominantly pearlitic matrix providing an excellent balance of strength, machinability, damping capacity, and castability. Used for engine blocks, cylinder heads, machine tool beds, lathe beds, flywheels, brake discs, hydraulic valve bodies, and general medium-duty structural castings. Equivalent to DIN GG25 and ASTM A48 Class 35.
| 40CrMoV4-6 | EN-GJL-250 | |
|---|---|---|
| Material Number | 1.7711 | 0.6025 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10269 | EN 1561 |
Chemical composition (wt%)
| Element | 40CrMoV4-6 | EN-GJL-250 | Overlap |
|---|---|---|---|
| C | 0.36–0.44% | 2.8–3.3% | No overlap |
| Si | ≤ 0.4% | 1.2–1.7% | No overlap |
| Mn | 0.45–0.85% | 0.8–1.2% | Partial |
| P | ≤ 0.03% | ≤ 0.15% | OK |
Mechanical properties
| Property | 40CrMoV4-6 | EN-GJL-250 | Unit |
|---|---|---|---|
| tensile_strength | 850–1000 | ≥ 250 | MPa |
| yield_strength | ≥ 640 | — | MPa |
| elongation | ≥ 14 | — | % |
Compatibility Assessment
40CrMoV4-6 and EN-GJL-250 have significantly different compositions (10% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 40CrMoV4-6 the same as EN-GJL-250?
40CrMoV4-6 and EN-GJL-250 have a 10% composition overlap. They are generally not directly interchangeable.
Can I replace 40CrMoV4-6 with EN-GJL-250?
Generally not recommended. The compositions differ significantly (10% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 40CrMoV4-6 and EN-GJL-250?
The main differences are in the following elements: C, Si, Mn. 40CrMoV4-6 is a Alloy Steel grade, while EN-GJL-250 is a Alloy Steel grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.