42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel vs AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
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42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel and AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment are both steel alloys commonly used in engineering applications.
Key Differences
- ◆ {'alloy_a': 'N/A', 'alloy_b': '633 MPa', 'property': 'Tensile Strength'}
- ◆ {'alloy_a': 'N/A', 'alloy_b': '357 MPa', 'property': 'Yield Strength'}
- ◆ {'alloy_a': 'N/A', 'alloy_b': '183 HB', 'property': 'Hardness (Brinell)'}
- ◆ {'alloy_a': 'N/A', 'alloy_b': 'N/A', 'property': 'Density'}
- ◆ {'alloy_a': 'N/A', 'alloy_b': 'N/A', 'property': 'Melting Point'}
- ◆ {'alloy_a': '5/10', 'alloy_b': '6/10', 'property': 'Strength Rating'}
- ◆ {'alloy_a': '3/10', 'alloy_b': '3/10', 'property': 'Corrosion Rating'}
- ◆ {'alloy_a': '9/10', 'alloy_b': '9/10', 'property': 'Cost Rating'}
- ◆ {'alloy_a': '6/10', 'alloy_b': '6/10', 'property': 'Machinability Rating'}
- ◆ {'alloy_a': '7/10', 'alloy_b': '7/10', 'property': 'Temperature Rating'}
- ◆ {'alloy_a': '5/10', 'alloy_b': '5/10', 'property': 'Weight Rating'}
Ratings Comparison
Strength
42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
5/10
AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
6/10
Corrosion Resistance
42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
3/10
AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
3/10
Lightweight
42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
5/10
AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
5/10
Machinability
42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
6/10
AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
6/10
Cost Efficiency
42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
9/10
AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
9/10
Temperature Resistance
42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
7/10
AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
7/10
Properties Comparison
| Property | 42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel | AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment |
|---|---|---|
| Metal Base | Steel | Steel |
| Tensile Strength | — | 633.0 MPa |
| Yield Strength | — | 357.0 MPa |
| Elongation | — | 26.3 % |
| Hardness (Brinell) | — | 183.0 HB |
| Elastic Modulus | — | — |
| Density | — | — |
| Melting Point | — | — |
| Thermal Conductivity | — | — |
| Weldable | — | — |
| Heat Treatable | — | — |
| Magnetic | — | — |
When to Use 42CrMo vs 4140 vs 42CrMo4 (EN 1.7225) Steel
Choose 42CrMo vs 4140 when your application specifically requires this steel alloy's unique combination of properties and industry certifications.
When to Use AISI SAE 8620 Steel Properties, Chemical Composition, Equivalent, Heat Treatment
Choose AISI SAE 8620 when you need superior strength.
Frequently Asked Questions
Which is stronger, 42CrMo or 8620?
Based on overall strength ratings, 8620 is stronger. 42CrMo scores 5/10 and 8620 scores 6/10 on the strength scale. Check specific tensile and yield values for your load case.
Does 42CrMo or 8620 have better corrosion resistance?
Both alloys share the same corrosion resistance rating of 3/10.
Is 42CrMo or 8620 easier to weld?
Weldability data is not available for both alloys. In terms of machinability, 42CrMo scores 6/10 and 8620 scores 6/10.
Which is more cost-effective, 42CrMo or 8620?
Both alloys are similarly priced with a cost rating of 9/10.
Can I use 42CrMo instead of 8620 for structural applications?
42CrMo has a strength rating of 5/10 versus 6/10 for 8620. Always validate substitution against your specific design codes and operating conditions.