13CrMo4-5 vs 27MnCrB5-2: 36% composition overlap. Significantly different materials serving different application areas.
13CrMo4-5 vs 27MnCrB5-2
Side-by-side chemical composition and mechanical property comparison.
Overview
13CrMo4-5
1.7335
Low-alloy Cr-Mo steel for elevated-temperature service. Good creep resistance up to 500°C. The standard grade for boiler tubes, headers, superheater tubes, and pressure equipment in power generation. Lower alloy content than 10CrMo9-10.
27MnCrB5-2
1.7182
Manganese-chromium-boron steel for direct hardening and hot stamping. Boron addition (0.0008-0.005%) dramatically improves hardenability at low cost. The standard grade for automotive press-hardened body-in-white components (B-pillar, side impact beams, bumper reinforcements).
| 13CrMo4-5 | 27MnCrB5-2 | |
|---|---|---|
| Material Number | 1.7335 | 1.7182 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10028-2 | EN 10083-3 |
Chemical composition (wt%)
| Element | 13CrMo4-5 | 27MnCrB5-2 | Overlap |
|---|---|---|---|
| C | 0.1–0.17% | 0.24–0.3% | No overlap |
| Si | 0–0.35% | 0–0.4% | OK |
| Mn | 0.4–1% | 1.1–1.4% | No overlap |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 13CrMo4-5 | 27MnCrB5-2 | Unit |
|---|---|---|---|
| tensile_strength | 440–590 | 900–1100 | MPa |
| yield_strength | ≥ 290 | ≥ 700 | MPa |
| elongation | ≥ 20 | ≥ 12 | % |
Compatibility Assessment
13CrMo4-5 and 27MnCrB5-2 have significantly different compositions (36% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 13CrMo4-5 the same as 27MnCrB5-2?
13CrMo4-5 and 27MnCrB5-2 have a 36% composition overlap. They are generally not directly interchangeable.
Can I replace 13CrMo4-5 with 27MnCrB5-2?
Generally not recommended. The compositions differ significantly (36% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 13CrMo4-5 and 27MnCrB5-2?
The main differences are in the following elements: C, Mn, Cr. 13CrMo4-5 is a Alloy Steel grade, while 27MnCrB5-2 is a Alloy Steel grade.
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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.