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Introduction
ASTM A485
covers high-carbon chromium bearing steel intended for anti-friction bearing
applications. This specification includes steel bars, tubes, and forged
components designed to provide excellent hardness, wear resistance, fatigue
strength, and dimensional stability.
ASTM A485
bearing steel is widely used in precision engineering and rotating equipment
where high load-carrying capacity and long service life are essential.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A485 bearing
steel bars and tubes, supplying high-quality products for critical bearing and
mechanical applications.
Applicable Standard
Standard
Specification: ASTM A485
Organization: ASTM International
Title: Standard Specification for High-Carbon Anti-Friction Bearing Steel
This
specification covers high-carbon chromium steel for anti-friction bearings and
precision engineering components.
Forms of Supply
ASTM A485
bearing steel is supplied in the following forms:
Round bars
Forged bars
Bright bars
Seamless tubes
Hollow bars
Forged rings
Cut-to-length materials
Supply
Condition
Annealed
condition
Spheroidized annealed
Cold finished
Heat-treated condition
Surface
Finish
Black finish
Bright finish
Ground finish
Polished finish
Standard
Sizes
Diameter: 10
mm to 500 mm
Wall Thickness: 2 mm to 50 mm
Length: Up to 6 meters or as required
(Custom
sizes available on request)
Grades Covered Under ASTM A485
Grade 1
Grade 2
Grade 3
Grade 4
100CrMnSi4–4
100CrMnSi6–4
100CrMnSi6–6
100CrMo7
100CrMo7–3
100CrMo7–4
100CrMnMoSi8–4–6
These grades
are high-carbon chromium bearing steels offering excellent hardness, fatigue
resistance, and wear performance.
Chemical Composition of ASTM A485 Bearing Steel (%)
|
Number |
Name |
C |
Mn |
P (max) |
S (max) |
Si |
Cr |
Ni (max) |
Ti (max) |
Cu (max) |
Mo |
O (max) |
Al (max) |
|
1 |
Grade 1 |
0.90–1.05 |
0.90–1.20 |
0.025 |
0.015 |
0.45–0.75 |
0.90–1.20 |
0.25 |
0.0050 |
0.30 |
0.10 (max) |
0.0015 |
0.050 |
|
2 |
Grade 2 |
0.85–1.00 |
1.40–1.70 |
0.025 |
0.015 |
0.50–0.80 |
1.40–1.80 |
0.25 |
0.0050 |
0.30 |
0.10 (max) |
0.0015 |
0.050 |
|
3 |
Grade 3 |
0.95–1.10 |
0.65–0.90 |
0.025 |
0.015 |
0.15–0.35 |
1.10–1.50 |
0.25 |
0.0050 |
0.30 |
0.20–0.30 |
0.0015 |
0.050 |
|
4 |
Grade 4 |
0.95–1.10 |
1.05–1.35 |
0.025 |
0.015 |
0.15–0.35 |
1.10–1.50 |
... |
0.0050 |
0.30 |
0.45–0.60 |
0.0015 |
0.050 |
|
B2 |
100CrMnSi4–4 |
0.93–1.05 |
0.90–1.20 |
0.025 |
0.015 |
0.45–0.75 |
0.90–1.20 |
... |
E |
0.30 |
0.10 (max) |
0.0015 |
0.050 |
|
B3 |
100CrMnSi6–4 |
0.93–1.05 |
1.00–1.20 |
0.025 |
0.015 |
0.45–0.75 |
1.40–1.65 |
... |
E |
0.30 |
0.10 (max) |
0.0015 |
0.050 |
|
B4 |
100CrMnSi6–6 |
0.93–1.05 |
1.40–1.70 |
0.025 |
0.015 |
0.45–0.75 |
1.40–1.65 |
... |
E |
0.30 |
0.10 (max) |
0.0015 |
0.050 |
|
B5 |
100CrMo7 |
0.93–1.05 |
0.25–0.45 |
0.025 |
0.015 |
0.15–0.35 |
1.65–1.95 |
... |
E |
0.30 |
0.15–0.30 |
0.0015 |
0.050 |
|
B6 |
100CrMo7–3 |
0.93–1.05 |
0.60–0.80 |
0.025 |
0.015 |
0.15–0.35 |
1.65–1.95 |
... |
E |
0.30 |
0.20–0.35 |
0.0015 |
0.050 |
|
B7 |
100CrMo7–4 |
0.93–1.05 |
0.60–0.80 |
0.025 |
0.015 |
0.15–0.35 |
1.65–1.95 |
... |
E |
0.30 |
0.40–0.50 |
0.0015 |
0.050 |
|
B8 |
100CrMnMoSi8–4–6 |
0.93–1.05 |
0.80–1.10 |
0.025 |
0.015 |
0.40–0.60 |
1.80–2.05 |
... |
E |
0.30 |
0.50–0.60 |
0.0015 |
0.050 |
A — Elements
not quoted shall not be intentionally added to the steel without the agreement
of the purchaser.
B — Intentional additions of calcium or calcium alloys for deoxidation or
inclusion shape control are not permitted unless specifically approved by the
purchaser.
C — Steels B2 through B8 meet the requirements of ISO 683, Part 17, Second
Edition, Table 3.
D — Oxygen content applies to product analysis and shall be determined in
accordance with Test Methods E1019.
E — A maximum titanium content may be agreed upon at the time of inquiry and
order.
Key Features of ASTM A485 Bearing Steel
Excellent
hardness and wear resistance
High fatigue strength
Good dimensional stability
Superior load-bearing capability
Excellent surface finish after machining
Suitable for precision engineering applications
Long service life under dynamic loads
Applications of ASTM A485 Bearing Steel
ASTM A485
steel is widely used in industries requiring high wear resistance and precision
performance.
Bearing
Industry
• Ball bearings
• Roller bearings
Automotive
Industry
• Transmission components
• Precision shafts
Industrial
Machinery
• Rotating equipment
• Wear-resistant components
Engineering
Applications
• Precision mechanical parts
• High-load assemblies
Heat Treatment
Steel is
typically spheroidize annealed for machinability
Hardening and tempering improve hardness and fatigue strength
Heat treatment ensures optimum bearing performance and wear resistance
Conclusion
ASTM A485 high-carbon bearing steel provides an excellent solution for anti-friction bearings and precision engineering applications. With superior hardness, wear resistance, and fatigue performance, this material is ideal for components operating under high stress and dynamic loading conditions.
Ladhani Metal Corporation supplies ASTM A485 bearing steel bars and tubes in various grades and sizes, ensuring high-quality products for bearing manufacturing, automotive, and industrial engineering applications.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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