Ball
Bearing Steels
1. Chemical composition / Equivalent Grades
Standard DIN AISI BS AFNOR UNI CSN
1.3505
E52100
S.135 100Cr6
100Cr6 14109
Composition C
Cr Si Mn Pmax. Smax.
0.95-1.10 1.30-1.60
0.15-0.35 0.25-0.45
0.025 0.025
2.
Non Metallic Inclusion and Gas Level
A
B C D
Thin 2.0 1.5 0.0 0.5
Heavy
1.0
0.5 0.0 0.5
O2 < 15 ppm Ti < 30 ppm
3. Hardness / Tensile Strength
Wire
Rod Wire for ball/roller
Wire for needle
Hardness HRB 88 – 92
94 – 97 ----
Hardness BHN 175 – 193
204 – 221 266 – 311
Tensile Strength (N/mm2) 590 – 650 690
– 750 900 – 1050
4. Microstructure
Microstructure has a good spheriodised structure having
fine to medium globular carbides in a matrix of ferrite.
This gives a very good cold workability and
“quenching-tempering” characteristics.
5. Decarb
WIRES & GROUND BARS
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As per customers specification or mutual understanding.
Product Applications
|
Grade |
Their application |
|
303 |
Highly suitable for manufacturing of machined
components such nozzles, couplings, threaded bars,
machined shafts and other critical applications. |
|
304 & 304 L |
Suitable for Food processing machines, Furniture,
Airport trolleys, Handles for buckets, Desks, Drawers
and other machined components like fasteners, etc. |
|
316 & 316 L |
Suitable for tough machined components for Chemical,
Petrochemical and Power Generation Industries,
Threaded Bars, Critical Shafts etc. |
|
410, 420 & 416 |
Suitable for Pump shafts, Surgical instruments,
Kitchenware, Automotive component, etc. |
|
440-C |
Suitable for professional cutlery, balls, wire drawing
and bar |
APPLICATION (SAE-52100) :
Ball
and Rollers of Bearings and inner outer rings, Top rollers
of spindles, threading Taps, fuel injection component
|
