Stainless Steel Round Bar: 17- 4, 303, 440C, and More High-Performance Grades

Titanium Industries is a global multi-alloy distributor offering a comprehensive selection of stainless steel round bar for aerospace, medical, defense, and industrial applications. We supply both high-strength and corrosion-resistant stainless steel bar stock in a variety of grades, diameters, and certifications.

Common Stainless Steel Round Bar Grades & Specifications

We supply stainless steel bar across multiple grades and AMS/ASTM specs, including:

Martensitic & Precipitation-Hardening Grades

Type 13-8: AMS 2300, AMS 5629, ASTM A564
Type 15-5: AMS 2300, AMS 5659, ASTM A564 TYPE XM-12
Type 17-4: AMS 5643, AMS 6875, AMS 6279, ASTM A564, ASTM A484, ASTM F899
Type 455: AMS 5617, ASTM A564, ASTM F899
Type 465: AMS 5936, ASTM A564, ASTM F899

Austenitic Grades

Type 303 / 303SE: AMS 5640, AMS 5641, ASTM A582
Type 304L: AMS 2241, AMS 5647, AMA 5639, ASTM A276, ASTM A479
Type 316L: AMS-QQ-S-763, AMS-S-7720, ASTM A484
Type 321: AMS 5645, AMS-QQ-S-763, ASTM A484, ASTM A276
Type 347: AMS 5646, AMS-QQ-S-763, ASTM A484, ASTM A276, ASTM A320

High Hardness Grades

Type 420: Common for cutting tools and wear applications
Type 440C: AMS 5630, AMS 5880, ASTM A276, ASTM F899 — excellent wear resistance

Heat-Resistant Superalloy

Type A286: AMS 5731, 5737, 5853; capable of AMS 5732, ASTM A638 — ideal for aerospace and fasteners

Why Choose Titanium Industries for Stainless Steel Bar?

Global supply chain reach for faster fulfillment
ISO 9001:2015 and AS9100 certified
Full certification and traceability on all products
Competitive lead times and just-in-time delivery
Dedicated service team with deep expertise across stainless steel, titanium, alloy steel, and more

Whether you’re sourcing 17-4 stainless steel, 303 stainless, 420, 440C, or stainless steel 430, Titanium Industries supports your project with material that meets demanding specs and quality expectations.

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