Cold Drawn Stainless Steel Bar - Precision Tolerances, ASTM A276 Certified

Cold drawn stainless steel bar represents a premium-grade product manufactured through a specialized room-temperature forming process that delivers exceptional dimensional accuracy and superior surface finish. This precision-engineered material serves critical roles in industries demanding tight tolerances, including aerospace component manufacturing, medical device fabrication, and high-precision instrumentation. Through controlled reduction processes, cold drawn bars achieve enhanced mechanical properties and consistent quality that hot-rolled alternatives cannot match, making them the preferred choice for applications where dimensional stability and surface integrity are paramount.

What is Cold Drawn Stainless Steel Bar?

Cold drawn stainless steel bar is austenitic or duplex stainless steel that has been pulled through precision dies at ambient temperature to achieve specific dimensional specifications. This mechanical working process increases tensile strength by 15-25% compared to annealed material while simultaneously improving surface finish to Ra values of 0.4-0.8 μm and achieving dimensional tolerances within ±0.05mm per ASTM A276 standards.

Cold Drawn Stainless Steel Bar Technical Specifications

Our cold drawn bars comply with ASTM A276/A276M-17 Section 5 for dimensional tolerances and ASTM A240 for chemical composition requirements. Available grades include 304 (UNS S30400), 316L (UNS S31603), and 2205 duplex (UNS S32205), with diameter ranges from 3mm to 300mm. Tensile strength reaches 515-860 MPa depending on grade and cold work percentage, while maintaining elongation of 35-40% minimum per EN 10088-2:2014 testing protocols.

Why Choose Our Cold Drawn Stainless Steel Bar

Our manufacturing facility operates ISO 9001:2015 certified production lines equipped with multi-stage drawing equipment capable of achieving h9 tolerance grades. Each production lot undergoes spectroscopic analysis per ASTM E1479 to verify chemistry, ultrasonic testing per ASTM A999 to ensure internal soundness, and dimensional inspection using coordinate measuring machines with ±0.002mm accuracy. We provide mill test certificates per EN 10204 3.1 documenting full traceability to heat numbers and compliance with specified mechanical properties.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 500 kilograms per specification, though we accommodate smaller quantities for specialized grades or custom sizes with adjusted lead times. Volume discounts apply for orders exceeding 5 metric tons, with factory-competitive pricing reflecting mill-direct sourcing advantages.

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 from actual test specimens, and dimensional verification reports. Additional third-party certification per ASTM A751 or PMI testing reports are available upon request.

What is the typical delivery time?

Standard grades in common sizes ship within 15-20 working days from order confirmation. Custom specifications requiring special drawing sequences or heat treatment cycles require 25-35 days. Express production scheduling is available for urgent requirements with 10-12 day turnaround for stocked raw material grades.

Can you cut to custom sizes?

Our precision cutting services utilize CNC sawing equipment capable of holding length tolerances to +0/-3mm per ASTM A484 requirements. We provide cut-to-length bars from 100mm to 6000mm, with deburred ends and protective end caps. Centerless grinding services are available for applications requiring diameter tolerances tighter than h9 grade.

Get a Competitive Quote for Cold Drawn Stainless Steel Bar

Contact our technical sales team to discuss your specific application requirements and receive detailed quotations based on grade, size, quantity, and delivery schedule. Our metallurgical engineers provide complimentary material selection guidance to optimize performance and cost-effectiveness for your manufacturing processes. Request samples with certified test reports to verify our quality standards meet your procurement specifications.