Other Types
- 1. End applications
- 2. Chemical Composition
- 3. Mechanical properties(hot rolled)
- 4. Mechanical properties(cold rolled)
End applications
springs, bearing parts, disk springs, automobile parts, thrust washers, retainers
Chemical Composition
High-Carbon Chromium Bearing Steel
| JIS | Chemical Composition(%) | ||||||
|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Mo | |
| SUJ2 | 0.95~1.10 | 0.15~0.35 | 0.50max | 0.025max | 0.025max | 1.30~1.60 | - |
Boiler·Alloy Steel For Heat-Exchange Equipment
| NIPPON STEEL | Chemical Composition(%) | ||||||
|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Mo | |
| NTBA12 | 0.10~0.20 | 0.10~0.50 | 0.30~0.80 | 0.035max | 0.035max | - | 0.45~0.65 |
| NTBA25 | 0.15max | 0.50max | 0.30~0.60 | 0.030max | 0.030max | 4.00~6.00 | 0.45~0.65 |
Mechanical properties(hot rolled)
High-Carbon Chromium Bearing Steel
| Type of steel | Annealing | Hardening | Tempering | |||||
|---|---|---|---|---|---|---|---|---|
| Temperature(℃) | Hardness(HRB) | Temperature(℃) | Hardness(HRC) | Temperature(℃) | Temperature(℃) | Hardness(HRC) | ||
| JIS |
SUJ 2 | 750air cooled | 85~98 | 790~850oil quenched | 62min | 790~850oil quenched | 150~200air cooled | 61min |
Boiler·Alloy Steel For Heat-Exchange Equipment
| Type of steel | Annealing(℃) | Mechanical properties | ||||
|---|---|---|---|---|---|---|
| Yield strength(N/mm2) | Tensile strength(N/mm2) | Elongation(%) | Hardness(HRB) | |||
| NIPPON STEEL | NTBA12 | 800air cooled | 205min | 870min | 25min | - |
| NTBA25 | 800air cooled | 205min | 410~550 | 20min | 88max | |
Mechanical properties(cold rolled)
High-Carbon Chromium Bearing Steel
| Type of steel | Annealing Hardness | Deep-Drawing Hardness | |
|---|---|---|---|
| Standard | Special | ||
| HV | HV | HV | |
| JIS SUJ2 |
≦220 | ≦200 | - |
Boiler·Alloy Steel For Heat-Exchange Equipment
| Type of steel | Annealing Hardness | Deep-Drawing Hardness | |||
|---|---|---|---|---|---|
| Standard | Special | ||||
| HV | HV | HV | |||
| Nisshin Standard |
NTBA12 | ≦140 | ≦130 | - | |
For more information on NIPPON STEEL materials, click the link below.
Click here for hot rolled catalog
Click here for cold rolled catalog
Notice
These material information in this page is based on NIPPON STEEL CORPORATION product catalog.
There are some cases maker do not accept the production depending on the production lot and specification.
Technical information in this website,while every reasonable effort was made to ensure the accuracy at the time of this publication, is general information relating to our products only and is not meant as any warranty,expressed or implied.
Such technical information does not guarantee that any of our products are suitable for your particular application or purpose. Use of any information contained in this website shall be at user's risk. Any information in this website is subject to change without prior notice. Please contact our company for up-dated information.
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5-26, 5-Chome, Nankominami, Suminoe-ku, Osaka, JAPAN
