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Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.
Multipurpose 4140 Alloy Steel Rods and Discs
Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress. For added wear resistance, the surface can be hardened with heat treating. These rods and discs have been manufactured to meet ASTM standards for quality and performance.
Note: Rods and discs may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
Hot-rolled steel rods have lower yield strength than cold-worked rods, so they’re easier to shape. They have a rougher surface finish than cold-worked rods, so they are good for applications where you need additional processing.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
- Yield Strength: 60,000 psi
- Hardness: Rockwell C10 (Medium)
- Heat Treatable: Yes
- Maximum Hardness After Heat Treatment: Not Rated
- Fabrication: See table
- Specifications Met: See table
1 ft. Lg. | |||||
|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Fabrication | Heat Treatment | Specifications Met | |
| 4 1/4" | 0" to 0.062" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K756 |
| 4 1/2" | 0" to 0.062" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K757 |
| 5 1/2" | 0" to 0.078" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K758 |
| 6 1/4" | 0" to 0.125" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K759 |
| 6 1/2" | 0" to 0.125" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K765 |
| 7" | 0" to 0.156" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K766 |
| 7 1/2" | 0" to 0.156" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K767 |
| 8" | 0" to 0.156" | Hot Rolled | Annealed (Softened) | ASTM A322 | 8927K768 |
Wear-Resistant 4820 Alloy Steel
- Yield Strength: 73,000 psi
- Hardness: Rockwell B96 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Fabrication: Hot Rolled
- Specifications Met: ASTM A29, ASTM A322
Often used for gears, bushings, and pins, this 4820 alloy steel resists wear from friction and abrasion. It’s a case-hardening steel, which means that heat treating will create a hard surface without making the interior brittle. This steel is manufactured to ASTM standards for performance and quality.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.