304 Stainless Steel Bar

Product Overview

304 stainless steel bar is the most widely used austenitic stainless steel bar due to its excellent corrosion resistance, good machinability, and outstanding weldability. With a balanced composition of chromium and nickel, it offers reliable performance in various industrial environments, including mildly corrosive and food-grade applications. It is ideal for structural components, shafts, fasteners, and machinery parts.

Available Sizes

Type: Round bar, Square bar, Flat bar, Hexagonal bar
Diameter (Round): 3mm – 300mm
Length: 1000mm – 6000mm (customizable)
Tolerances: h9, h10, h11 (upon request)
Standards: ASTM A276, ASTM A484, ASTM A479, EN 10088-3, JIS G4303

Chemical Composition

Element	Content (%)
C	≤ 0.08
Si	≤ 1.00
Mn	≤ 2.00
P	≤ 0.045
S	≤ 0.030
Cr	18.0 – 20.0
Ni	8.0 – 11.0

Mechanical Properties

Property	Value (Annealed)
Tensile Strength	≥ 515 MPa
Yield Strength	≥ 205 MPa
Elongation (%)	≥ 40%
Hardness (HB)	≤ 201

Features & Advantages

• Excellent resistance to corrosion and oxidation
• High strength and good ductility
• Easy to fabricate, weld, and machine
• Hygienic surface, ideal for food and medical applications
• Non-magnetic in the annealed condition

6. Applications

Surface Finish

• Black
• Pickled
• Bright
• Polished (180#, 240#, 320#, 400#)
• Peeled / Turned / Centerless Ground

Processing Services

• Precision cutting to length
• Surface polishing and grinding
• Machining and turning
• Threading and chamfering
• Custom bar shaping and dimensioning