Heat treatment is one of the most crucial operations in the manufacturing cycle for it imparts the strength and hardness to the ball. Carbon Steel Balls are extensively used in automotive and commercial industries, hence the qualities like toughness and wear resistance are so critical.
At ABI, we pay attention to all the quality parameters and present our clients with two versions of the Carbon Steel Balls:
This ball is the carburised case with a softcore. The type is generally used in applications where there are moderate loads and slow rotating parts. The low carbon design lends resistance to shock loads and surface wear while providing good load-carrying ability.
| AISI 302 | |
| Size Range | 2.0mm – 50mm (2″) |
| Grades | G48 — G1000 |
| Chemical Composition | |
| Carbon | 0.12-0.18 % |
| Manganese | 0.30-0.60% |
| Silicon | 0.17 — 0.37% |
| Sulphur | 0.0 3 5% max. |
| Phosphorous | 0.0 3 5% max. |
| Mechanical Properties | |
| Tensile Strength | 325,000 psi |
| Yield Strength | 295,000 psi |
| Modulus of Elasticity | 29,500,000 psi |
| Density | 0.284 cb./cu. in. |
| Physical Characteristics | |
| Hardness | HRC 60 min |
| General Usage | |
| Moderate loads and alow rotating parts, for example: castors, conveyors, roller skates, drawer slides, seat slides, bicycles,etc. |
| Case Depth | |||||
| Ball Diameter | 2.0-3.0mm | 3.1-4.5mm | 4.6-5.5mm | 5.6-6.5mm | 6.6-9.5mm |
| Minimum Case Depth | 0.5mm | 0.6mm | 0.8mm | 0.9mm | 1.1mm |
| Ball Diameter | 9.5-11.0mm | 11.1-12.5mm | 12.6-14.0mm | 14.1-19.0mm | 19.1-38.0mm |
| Minimum Case Depth | 1.4mm | 1.7mm | 1.8mm | 1.9mm | 2.0mm |
The high carbon steel balls have the advantage of being through hardened hence it will take higher loads and provide longer life than case hardened balls.
| AISI 302 | |
| Size Range | 2.0mm – 25.4mm (1″) |
| Grades | G48 — G1000 |
| Chemical Composition | |
| Carbon | 0.8 -0.92% |
| Manganese | 0.70 -1.0% |
| Silicon | 0.17 -0.37% |
| Sulphur | 0.05% max. |
| Phosphorous | 0.04% max. |
| General Usage | |
| Take high load and provide longer life than case hardened carbon balls, applications is the cycle industry, food industry, etc. |
| Material Conversion: | ||||
|
ASTM/AISI
|
DIN
|
W-Nr.
|
NF
|
JIS
|
|
1085
|
CK85
|
1.1269
|
XC85
|
SUP3
|