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About Steel
Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.
High-Strength Fatigue-Resistant C300 Alloy Steel

- Yield Strength: 110,000 psi
- Hardness: Rockwell C30 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C55
- Fabrication: Hot Rolled
Offering excellent resistance to cracking from impact and compression, C300 alloy steel is often used for dies and tooling. It is also known as maraging steel and VascoMax.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Heat Treatment | 1/2 ft. Lg. | 1 ft. Lg. | 3 ft. Lg. | |
1/4" | 0" to 0.002" | Annealed (Softened) | 0000000 | |||
3/8" | 0" to 0.002" | Annealed (Softened) | 0000000 | |||
1/2" | 0" to 0.004" | Annealed (Softened) | 0000000 | |||
5/8" | 0" to 0.004" | Annealed (Softened) | 0000000 | |||
3/4" | 0" to 0.004" | Annealed (Softened) | 0000000 | |||
7/8" | 0" to 0.004" | Annealed (Softened) | 0000000 | |||
1" | 0" to 0.005" | Annealed (Softened) | 0000000 |