EN-GJL-200 vs EN-GJL-300: 43% composition overlap. Significantly different materials serving different application areas.
EN-GJL-200 vs EN-GJL-300
Side-by-side chemical composition and mechanical property comparison.
Overview
EN-GJL-200
0.6020
Grey cast iron with lamellar graphite and minimum tensile strength 200 MPa. Ferrite-pearlite matrix. Good balance of castability, machinability, and moderate strength. Excellent vibration damping. The most economical grey iron grade for general engineering. Used for machine bases, pump housings, valve bodies, pipe fittings, brake drums, and general-purpose castings. Equivalent to DIN GG20 and ASTM A48 Class 30.
EN-GJL-300
0.6030
Grey cast iron with lamellar graphite and minimum tensile strength 300 MPa. Fully pearlitic matrix with higher strength than EN-GJL-250 but slightly reduced machinability and damping. Used for cylinder liners, heavy-duty machine beds, hydraulic cylinders, gearbox housings, large flywheels, and structural castings requiring higher strength. Equivalent to DIN GG30 and ASTM A48 Class 45.
| EN-GJL-200 | EN-GJL-300 | |
|---|---|---|
| Material Number | 0.6020 | 0.6030 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 1561 | EN 1561 |
Chemical composition (wt%) — Pro
| Element | EN-GJL-200 | EN-GJL-300 | Overlap |
|---|---|---|---|
| C | 3–3.3% | 2.6–3% | Partial |
| Si | 1.5–2.2% | 1.1–1.5% | Partial |
| Mn | 0.6–0.9% | 0.8–1.2% | Partial |
| P | ≤ 0.15% | ≤ 0.15% | OK |
| S |
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Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | EN-GJL-200 | EN-GJL-300 | Unit |
|---|---|---|---|
| Tensile Strength | ≥ 200 | ≥ 300 | MPa |
| Hardness HB | 160–210 | 195–260 | HB |
| Density | ≥ 7.15 | ≥ 7.25 | g/cm3 |
| Thermal Conductivity | |||
| Elastic Modulus |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
EN-GJL-200 and EN-GJL-300 have significantly different compositions (43% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN-GJL-200 the same as EN-GJL-300?
EN-GJL-200 and EN-GJL-300 have a 43% composition overlap. They are generally not directly interchangeable.
Can I replace EN-GJL-200 with EN-GJL-300?
Generally not recommended. The compositions differ significantly (43% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN-GJL-200 and EN-GJL-300?
The main differences are in the following elements: C, Si, Mn. EN-GJL-200 is a Alloy Steel grade, while EN-GJL-300 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.