O1 Tool Steel Bar is a high carbon, oil-hardening cold work tool steel widely recognized for its outstanding wear resistance, hardness, and dimensional stability. Supplied by Jiangsu Cunrui Metal Products Co., Ltd., our O1 Steel complies with ASTM A681 and other international standards. Every batch is supported with mill test certificates, inspection reports, and third-party certifications to ensure consistent quality and mechanical performance.
Key Advantages
High hardness of 57–62 HRC after heat treatment
Excellent wear resistance for long service life
Dimensional stability with minimal distortion during heat treatment
Reliable quality with international standard compliance and full traceability
Applications
O1 Tool Steel Bar is commonly used in the manufacture of cold work dies, punches, gauges, shear blades, woodworking tools, and precision parts. It is a preferred choice for applications that require high wear resistance and stability. For example, customers using O1 Steel for stamping dies report up to 40 percent longer service life compared to standard tool steels.
Product Specifications and Technical Data
|
Item |
Specification |
|
Material |
O1 Tool Steel (ASTM A681) |
|
Diameter Range |
8 mm – 500 mm (custom available) |
|
Length |
1000 mm – 6000 mm (cut-to-length available) |
|
Chemical Composition |
C: 0.90–1.00%, Mn: 1.00–1.40%, Cr: 0.40–0.60%, W: 0.40–0.60% |
|
Hardness (Annealed) |
≤ 229 HB |
|
Hardness (Quenched) |
57–62 HRC |
|
Tensile Strength |
≥ 700 MPa |
|
Yield Strength |
≥ 415 MPa |
|
Surface Condition |
Black, polished, turned, or custom finish |
Customization Services
We provide non-standard sizes, cut-to-length service, machining, drilling, and heat treatment. Surface treatments such as polished, black, or rust-protected finishes are available. Flexible minimum order quantities are supported, and both small trial orders and bulk supply are accepted.
Price & Delivery
We offer competitive factory-direct prices with discounts for bulk orders. Standard sizes are available in stock for immediate shipment, while customized orders can be delivered within 7 to 20 days depending on requirements.
Our Strength
Jiangsu Cunrui Metal Products Co., Ltd. operates advanced forging, machining, and heat treatment facilities. With a strong technical team, ISO 9001 certification, and extensive export experience, we supply O1 Tool Steel to more than 50 countries in Europe, America, the Middle East, and Asia.
Service & Support
We respond to inquiries within 24 hours and provide technical guidance on tool steel selection and processing. All products are packaged to meet international export standards with rust-proof protection and wooden cases. After-sales service includes replacement or refund in the event of verified quality issues.
FAQ
Q1: Does your O1 Tool Steel Bar meet ASTM standards?
Yes, our O1 Steel fully complies with ASTM A681 and can be verified by third-party inspection.
Q2: Do you accept small orders?
Yes, we support flexible minimum order quantities including trial orders.
Q3: Can you provide machining services?
Yes, we offer cutting, drilling, turning, grinding, and heat treatment according to customer drawings.
Q4: What is the delivery time?
Stock sizes are available for immediate delivery, while customized orders are typically shipped within 7 to 20 days.
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