GCR15
5 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.
Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.
Open condition selection, comparison and carbon-equivalent tools for GCR15 →GCr15 · GB /T 18254-2002
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.95 ～ 1.05 |
| Cr | 1.4 ～ 1.65 |
| Cu | ≤ 0.25 (lower limit not stated) |
| Mn | 0.25 ～ 0.45 |
| Mo | ≤ 0.1 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Si | 0.15 ～ 0.35 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
GCr15 · Q/BQB 2731-2009
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Al | ≤ 0.05 (lower limit not stated) |
| As | ≤ 0.04 (lower limit not stated) |
| C | 0.95 ～ 1.05 |
| Cr | 1.4 ～ 1.65 |
| Cu | ≤ 0.25 (lower limit not stated) |
| Mn | 0.25 ～ 0.45 |
| Mo | ≤ 0.1 (lower limit not stated) |
| Ni | ≤ 0.25 (lower limit not stated) |
| O | ≤ 0.0013 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| Pb | ≤ 0.002 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Sb | ≤ 0.005 (lower limit not stated) |
| Si | 0.15 ～ 0.35 |
| Sn | ≤ 0.03 (lower limit not stated) |
| Ti | ≤ 0.005 (lower limit not stated) |
Applicability and limitations
This record contains composition relationships requiring review; no cold-heading suitability or strength-class recommendation is provided to customers.
GCr15 · YB /T 4323-2013
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.95 ～ 1.05 |
| Cr | 1.4 ～ 1.65 |
| Cu | ≤ 0.25 (lower limit not stated) |
| Mn | 0.25 ～ 0.45 |
| Mo | ≤ 0.08 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Si | 0.15 ～ 0.35 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
GCr15 · YB /T 4572-2016
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Al | ≤ 0.05 (lower limit not stated) |
| As | ≤ 0.04 (lower limit not stated) |
| C | 0.95 ～ 1.05 |
| Cr | 1.4 ～ 1.65 |
| Cu | ≤ 0.25 (lower limit not stated) |
| Mn | 0.25 ～ 0.45 |
| Mo | ≤ 0.1 (lower limit not stated) |
| Ni | ≤ 0.25 (lower limit not stated) |
| O | ≤ 0.0012 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| Pb | ≤ 0.002 (lower limit not stated) |
| S | ≤ 0.02 (lower limit not stated) |
| Si | 0.15 ～ 0.35 |
| Ti | ≤ 0.005 (lower limit not stated) |
Applicability and limitations
This record contains composition relationships requiring review; no cold-heading suitability or strength-class recommendation is provided to customers.
GCr15 · YB 9-1968
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.95 ～ 1.05 |
| Cr | 1.3 ～ 1.65 |
| Cu | ≤ 0.25 (lower limit not stated) |
| Mn | 0.2 ～ 0.4 |
| Ni | ≤ 0.3 (lower limit not stated) |
| P | ≤ 0.027 (lower limit not stated) |
| S | ≤ 0.02 (lower limit not stated) |
| Si | 0.15 ～ 0.35 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.