13CrMo4-5 vs 23MnB4: 49% composition overlap. Significantly different materials serving different application areas.
13CrMo4-5 vs 23MnB4
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.
23MnB4
1.5535
Cold-heading boron steel — optimized for cold forming of high-strength fasteners. Boron gives hardenability equivalent to much more expensive Cr-Mo alloys. Supplied spheroidized for cold heading, then quenched+tempered after forming. Property class 10.9 bolts are commonly made from this grade. Used for high-strength bolts (M8-M24), screws, studs, and threaded fasteners for automotive and construction.
| 13CrMo4-5 | 23MnB4 | |
|---|---|---|
| Material Number | 1.7335 | 1.5535 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10028-2 | EN 10263-4 |
Chemical composition (wt%)
| Element | 13CrMo4-5 | 23MnB4 | Overlap |
|---|---|---|---|
| C | 0.1–0.17% | 0.2–0.27% | No overlap |
| Si | 0–0.35% | 0–0.4% | OK |
| Mn | 0.4–1% | 0.8–1.1% | Partial |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 13CrMo4-5 | 23MnB4 | Unit |
|---|---|---|---|
| tensile_strength | 440–590 | 830–1040 | MPa |
| yield_strength | ≥ 290 | 660–830 | MPa |
| elongation | ≥ 20 | 9–14 | % |
Compatibility Assessment
13CrMo4-5 and 23MnB4 have significantly different compositions (49% 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 23MnB4?
13CrMo4-5 and 23MnB4 have a 49% composition overlap. They are generally not directly interchangeable.
Can I replace 13CrMo4-5 with 23MnB4?
Generally not recommended. The compositions differ significantly (49% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 13CrMo4-5 and 23MnB4?
The main differences are in the following elements: C, Mn. 13CrMo4-5 is a Alloy Steel grade, while 23MnB4 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.