304 Stainless Steel Bar (304/304L, ASTM A276)
Arch Metals supplies 304 stainless steel bar, including low-carbon 304L, from Dallas, Texas, to fabricators, machine shops and OEMs across Texas and the surrounding states. 304 is the most widely used stainless steel, an austenitic 18-8 grade with good corrosion resistance, weldability and formability. We supply annealed 304 and 304L bar to ASTM A276/A479 and AMS 5639/5647 with certified material and saw cutting to length. Request a quote and we’ll confirm sizes and availability.
304 Stainless Steel Forms
- Round bar, annealed
- Hex, square and flat bar
- 304L dual-certified bar on request
- Plate and sheet on request
Size availability changes with mill supply. Send us your sizes through our quote request form and we’ll confirm stock, lead time and pricing.
304 Stainless Steel Condition and Specifications
- 304 annealed bar (ASTM A276, ASTM A479, AMS 5639): solution annealed. 304 is not hardenable by heat treatment; strength comes only from cold work.
- 304L annealed bar (ASTM A276, ASTM A479, AMS 5647): low carbon (0.03% max) to avoid sensitization when welding. Bar is often dual-certified 304/304L.
- Equivalent designations (UNS S30400 / S30403): also called Type 304, 18-8 stainless and 1.4301 (EN).
Not sure which condition or specification your drawing calls for? Send us the print requirements and we’ll match the material.
Typical Properties of Annealed 304 Stainless Steel
- Ultimate tensile strength: about 85 ksi (585 MPa)
- Yield strength: about 35 ksi (240 MPa)
- Elongation: about 55%
- Hardness: about 80 HRB
- Density: 0.289 lb/in³ (8.0 g/cm³)
- Chemistry: about 18% chromium and 8% nickel
These are typical values for annealed bar. Guaranteed minimums vary by specification, condition and size, so check the governing spec or your mill cert for design values.
Why Engineers Choose 304 Stainless Steel
304 balances cost, corrosion resistance and ease of fabrication better than any other stainless grade. It welds without preheat, forms well and holds up in most indoor and atmospheric environments. For faster machining, 303 stainless steel bar is the better choice; for chlorides, salt spray or acids, use 316 stainless steel bar. Common uses for 304 include:
- Food, beverage and dairy equipment
- Shafts, fasteners and machined parts
- Architectural trim and railings
- Tanks, brackets and frames
- Chemical and pharmaceutical equipment
304 Stainless Steel FAQs
What is the difference between 304 and 304L stainless steel?
304L has a lower carbon limit (0.03% max), which prevents carbide precipitation in weld zones. Much bar stock is dual-certified to both 304 and 304L.
What is the difference between 304 and 316 stainless steel?
316 adds 2–3% molybdenum, which gives it much better resistance to chlorides and pitting. 304 costs less and is fine for most non-marine applications.
Is 304 stainless steel magnetic?
Annealed 304 is essentially non-magnetic. Cold working can make it slightly magnetic.
Cut-to-Size 304 Stainless Steel With Delivery Across Texas
We ship 304 stainless steel throughout Texas, Oklahoma, Louisiana, New Mexico and Arizona, and we saw bar and plate to the size you need. See our processing services for cutting options, or browse all the metals we supply. Local DFW buyers can also see our 304 stainless steel Dallas page. We also supply 321 stainless and 17-4PH stainless bar.
To get pricing, send us the grade, condition, form, size, length and quantity through our quote request form, or call (888) 444-6061.