Tool Steel Bar - High Carbon & Alloy Cold Rolled, ASTM A600 Certified

Tool steel bar represents a specialized category of high-performance alloy steel engineered for manufacturing cutting tools, dies, and precision industrial components. Characterized by exceptional hardness retention, superior wear resistance, and robust mechanical properties at elevated temperatures, these bars serve critical roles in automotive stamping, aerospace machining, and metal forming operations. Available in cold-rolled and hot-rolled configurations, tool steel bars comply with ASTM A600 specifications while offering carbon content ranging from 0.60% to 1.50% depending on grade selection.

What is Tool Steel Bar?

Tool steel bar is a premium-grade carbon and alloy steel product manufactured through controlled rolling and heat treatment processes to achieve hardness levels between 58-65 HRC after proper quenching and tempering. These bars incorporate alloying elements including chromium (0.40-1.60%), molybdenum (0.15-1.00%), vanadium (0.10-0.50%), and tungsten (0.40-2.00%) to enhance hardenability, toughness, and red hardness characteristics essential for tooling applications.

Tool Steel Bar Technical Specifications

Standard dimensions range from 6mm to 300mm diameter for round bars, with rectangular sections available from 10mm x 10mm to 200mm x 200mm. Chemical composition meets ASTM A600, DIN 17350, and JIS G4404 requirements with carbon content precisely controlled between 0.60-1.50% maximum depending on grade (D2, O1, A2, H13). Tensile strength reaches 1,800-2,400 MPa in hardened condition, while surface finish achieves Ra 1.6μm for cold-finished grades. Manufacturing tolerances comply with h9 precision for diameter and ±0.20mm for length per EN 10277-3:2008 standards.

Why Choose Our Tool Steel Bar Manufacturing

Our production facility operates vacuum degassing and electroslag remelting (ESR) processes to minimize sulfur content below 0.015% and ensure uniform carbide distribution throughout the bar cross-section. Each heat undergoes spectroscopic analysis with certified mill test reports traceable to ASTM E1806 standards. We maintain ISO 9001:2015 certification with in-house hardness testing equipment calibrated to NIST standards, guaranteeing consistency across production batches. Material certificates include chemical composition, mechanical properties, and heat treatment response data for full traceability.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 500 kilograms per grade and dimension combination. For specialized tool steel grades such as M2 high-speed steel or premium D2 cold work steel, minimum orders start at 1,000 kilograms to ensure economical production runs. Mixed container loads are acceptable when total weight exceeds 5 metric tons.

Do you provide material test certificates?

Yes, we supply EN 10204 3.1 mill test certificates with every shipment, documenting chemical composition per heat analysis, mechanical properties including tensile strength and hardness values, and heat treatment parameters. Certificates bear third-party inspection stamps from SGS or TÜV upon request at no additional charge for orders exceeding 10 metric tons.

What is the typical delivery time?

Stock grades including O1, A2, and D2 in common dimensions ship within 15-20 business days after order confirmation. Custom sizes requiring special rolling or heat treatment extend lead times to 35-45 days. Express production is available for urgent tooling requirements with 10-12 day turnaround for premium charges of 15% above standard pricing.

Can you cut to custom sizes?

Our precision sawing equipment handles lengths from 100mm to 6,000mm with cutting tolerance of ±1.0mm. We offer additional services including surface grinding to achieve Ra 0.8μm finish, centerless grinding for tight diameter tolerances of ±0.02mm, and stress-relieving heat treatment at 650°C to minimize residual stresses before machining. Custom cutting incurs processing fees starting at $0.50 per cut depending on bar diameter.

Get a Competitive Quote for Tool Steel Bar

Request factory-direct pricing for your specific tool steel bar requirements including grade selection, dimensions, quantity, and delivery schedule. Our technical sales team provides material selection guidance based on your application parameters such as working temperature, impact resistance needs, and required surface finish. Contact us today for mill test certificates, material data sheets, and heat treatment recommendations tailored to your tooling manufacturing process.