OnlineMetals.com Home Page – Customer Service (888) 527-3331
My cart
  • Close menu
  • Hello, Sign in
  • Account & Orders
    • My Account
    • Order History
    • My Quotes
    • Project Lists
    • Contact Us
  • Deals

Reach new customers!
Sell on our marketplace

  • Shop by Material
    • Metals

    • Alloy Steel
    • Aluminum
    • Beryllium Copper
    • Brass
    • Bronze
    • Carbon Steel
    • Copper
    • Dura-Bar® Cast Iron
    • Lead
    • Magnesium
    • Nickel
    • Nickel Silver
    • Pewter
    • Stainless Steel
    • Titanium
    • Tool Steel
    • Tungsten Carbide
    • Zinc
    • Other Materials

    • Plastics
    • Rubber
    • Carbon Fiber
    • Fiberglass
    • Kevlar
    • Graphite
    • Wood
    • New! Coal
    • New! Machinable Wax
    • Non-Raw Materials

    • 3D Printing
    • Fittings
    • Abrasives
  • Shop by Shape
    • Long Product (Bar)

    • Round
    • Square
    • Rectangle
    • Angle
    • Channel
    • Hex
    • Hollowbar
    • Half Oval
    • Half Round
    • T-Bar
    • T-Slot
    • Drill Rod
    • I-Beam
    • Round Rod
    • Threaded Rod
    • Key Stock
    • Flat Product

    • Sheet & Plate
    • Strip
    • Precision Blanks
    • Circles
    • Expanded
    • Perforated
    • Tread (Diamond) Plate
    • Foil
    • Wire Mesh
    • Tube

    • Round
    • Pipe
    • Square
    • Rectangle
    • Coil
    • Hollowbar
    • Streamline Tube
    • New! EZ Tube
    • New! Hypodermic Tube
    • Other

    • Ball
    • Decorative
    • Pipe Fittings
    • Protoboxes
    • Sample Pack
    • U-Edge
    • Cable and Wire
  • Build Accessories
    • 3D Printing

    • Metal 3D Printing Filament
    • Ceramic 3D Printing Filament
    • Glass 3D Printing Filament
    • 3D Printing Accessories
    • Fittings

    • Pipe Fittings
    • Tube Fittings
    • Framing Systems

    • Unistrut Systems
    • T-Slot Systems
    • EZTube
    • Precision Products

    • Centerless Ground Accurod®
    • Drill Rod
    • Ground Flat Stock
    • Precision Blanks
    • Cable and Wire

    • Uninsulated Wire
    • Hook-Up Wire
    • Cable Assemblies
    • Magnet Wire
    • Wire and Cable Accessories
    • Razor Wire
  • New! Rewards
    • OLM Rewards

    • About Rewards
    • Sign In for Rewards
  • Knowledge Hub
    • Articles

    • Working With Metal
    • Understanding Materials
    • Applications
    • Projects
    • Maker Spotlight
    • Online Metals Exclusive Content
    • Reference Guides

    • Product Guides
    • Temper Guide
    • Tolerances
    • Hardness Conversion Table
    • Thickness Conversion Table
    • Fraction Conversion Table
    • Melting Points of Materials
    • Weight Calculator
    • Videos

    • Made with Metals
    • Materials Talk
    • DIY & How-to Projects
    • The Best of Online Metals
    • Quality

    • Mill Test Reports (MTR)
    • MSDS
  • Business Solutions
    • B2B Purchasing

    • Credit Terms
    • Tax and Banking
    • Quality
    • Partner Services

    • Become an Affiliate
    • Sell on Online Metals
    • Paperless Parts Viewer
    • Fabrication Services

    • Production Waterjet
    • Laser Cutting
    • Cutting and Finishing Services
  • Industries Served
    • Industries Served

    • Aerospace
    • Architectural
    • Automotive/Motorsports
    • Bicycles/Cycling
    • Bladesmithing
    • Defense
    • Education/Schools
    • Marine
    • Prototyping and R&D
    • Robotics
    • Welding
Close menu
Back to top
Shop all Products
  • Aluminum
      • Aluminum
  • Stainless Steel
      • Stainless Steel
  • Steel
      • Steel
  • Copper
      • Copper
  • Brass
      • Brass
  • Bronze
      • Bronze
  • Nickel
      • Nickel
  • Titanium
      • Titanium
  • Other Metals
      • Other Metals
  • Other Raw Materials
      • Other Raw Materials
  • Manufacturing Accessories
      • Manufacturing Accessories
  • Finishing Products
      • Finishing Products
Shop Aerospace Materials

Open for Orders 24/7!

Get a Quick Quote!
Deals
Get a Quick Quote!
  • Home
  • product guide
  • Alloy
304

Stainless 304 Product Guide

 

Applications | Specifications | Mechanical and Chemical Data | Tolerances

 

Overview

The most commonly used stainless steel alloy in the world, 304/304L stainless steel offers a great mix of strength and corrosion resistance without being overly specialized. It maintains excellent corrosion resistance in most situations outside of marine environments and maintains its properties in high temperature situations. It is typically used in aerospace, food and beverage industry, pressure containers, architectural designs and trim, cryogenic applications, and chemical processing equipment.

 

Common Trade Names

UNS S30400, AISI 304, SAE 304, T304, T-304, Cr/Ni 18/10, austenitic stainless steel

 

Other Resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

 

Products

Purchase Stainless Angle Equal 304 | Stainless Angle Unequal 304 | Half Round Bar 304 | Hex Bar 304 | Rectangle Bar 304 | Round Bar 304 | Square Bar 304 | Channel 304 | Pipe 304 | Expanded Sheet 304 | Tread Plate 304 | Perforated Sheet 304 | Sheet/Plate 304 | T-Bar 304 | Threaded Rod 304 | Rectangle Tube 304 | Round Tube 304 | Square Tube 304 | Backsplash 304 | Bushing 304 | Cap 304 | Coupling 304 | Cross 304 | Elbow 304 | Flange 304 | Foil 304 | Half Coupling 304 | Insert 304 | Nipple 304 | Plug 304 | Reducer 304 | Sample Pack 304 | Tape 304 | Tee 304 | Union 304 | Wire 304 | Decorative Fittings 304

 

Applications

  • Aerospace
  • Food/Beverage Hardware
  • Pressure Containers
  • Architectural Design/Trim
  • Cryogenic Equipment
  • Chemical Processing Equipment

 

Stainless 304 Specifications

ASTM

AMS

ASME

A240 5511 SA-240
B210 5513  
  5647  



Physical Properties 304
  Annealed 1/8 Hard Full Hard
Density 0.289 lb/in3 0.289 lb/in3 0.289 lb/in3
Ultimate Tensile Strength 85 ksi 100 ksi max. 186 ksi max.
Yield Tensile Strength 35 ksi 55.1 ksi max. 140 ksi max.
Shear Modulus 11,000 ksi 11,000 ksi 11,000 ksi
Shear Strength 56 ksi 77 ksi N/A
Fatigue Strength 27.5 ksi 52 ksi N/A
Hardness Rockwell | Brinell B92 | 195 max B100 | 240 C41 | 371
Elongation at Break Percentage 55% 37% 1% min.
Reduction of Area 70% N/A N/A
Modulus of Elasticity 28,000 ksi 28,000 ksi 28,000 ksi
Poisson's Ratio 0.29 0.29 0.29
Machinability Percentage 40% N/A N/A
Melting Point 2,550-2,651 °F 2,550-2,651 °F 2,550-2,651 °F
Specific Heat 1.1 x 10^-1 BTU/lb-°F 1.1 x 10^-1 BTU/lb-°F 1.1 x 10^-1 BTU/lb-°F
Thermal Conductivity 112 BTU-in/hr-ft^2-°F 112 BTU-in/hr-ft^2-°F 112 BTU-in/hr-ft^2-°F
Electrical Conductivity 2.4% IACS 2.4% IACS 2.4% IACS


Chemistry Information
Element
Percentage
C 0.08 max
Cr 20
Fe 66.34 - 74
Ni 8 - 10.5
Mn 2 max
P 0.045 max
S 0.03 max
Si 1 max
knowledge hub icon
Knowledge
Hub
  • Application Hub
  • Article Hub
  • Reference Tool & Guide Hub
  • Video Hub
quick tools icon
Quick Tools
  • Metal Weight Calculator
  • Product Guides
  • Hardness Conversion Table
  • Melting Points of Metal
  • Made With Metals Gallery
Business services icon
Partner Services
  • Become a Marketplace Seller
  • Affiliates Program
  • Net 30 Credit Terms
  • W9 Form & ACH Payment Setup
tos icon
Terms of Use
  • Cookie Preferences
  • Privacy Policy
  • Returns & Price Matching
  • Site Accessibility
  • Terms & Conditions
  • Rewards Program
  • Rewards T&Cs
about us
About Us
  • Careers
  • Contact Us
  • Environmental Initiatives
  • Location & Hours
  • Our Story
  • Shipping Process
  • ISO & Quality
  • Reviews
  • Site Updates

knowledge hub iconKnowledge Hub online metals footer navigation arrows
  • Application Hub
  • Article Hub
  • Reference Tool & Guide Hub
  • Video Hub

Quick tools iconQuick Tools online metals footer navigation arrows
  • Weight Calculator
  • Product Guides
  • Hardness Conversion Table
  • Melting Points
  • Made With Metals Gallery

b2b iconPartner Services online metals footer navigation arrows
  • Become a Marketplace Seller
  • Affiliates Program
  • Net 30 Credit Terms
  • W9 Form & Vendor Information

tos iconTerms of Use online metals footer navigation arrows
  • Cookie Preferences
  • Privacy Policy
  • Returns & Price Matching
  • Site Accessibility
  • Terms & Conditions
  • Rewards Program
  • Rewards T&Cs

about us iconAbout Us online metals footer navigation arrows
  • Careers
  • Contact Us
  • Environmental Initiatives
  • Locations & Hours
  • Our Story
  • Shipping Process
  • ISO & Quality
  • Reviews
  • Site Updates

ALL CONTENT © ONLINEMETALS.COM 1999-2025. ALL RIGHTS RESERVED.

Email: sales@onlinemetals.com

Facebook Icon X Icon Pinterest Icon Instagram Icon Linkedin Icon Youtube Icon

Close

Sign In
sitelogo

A link to reset your password has been sent to your email address.


Follow the instructions in the email to reset your password.

Your password has been updated successfully.

Please use it when signing in below

Sign In to request a quote
 
Password guidelines

  • Minimum 8 characters
  • Minimum three character classes must be used from below:
    • Uppercase letters (A-Z)
    • Lowercase letters (a-z)
    • Numbers (0-9)
    • Special characters: ~!@$%^&*_-+=`|\(){}[]:;"',.?/
Keep me "signed in" info

Choosing "Keep me signed in" reduces the number of times you're asked to sign in on this device

To keep your account secure, use this option only on your personal devices.

Don't have an account yet?

Close

Sign In
sitelogo

Welcome,
!
 
Password guidelines

  • Minimum 8 characters
  • Minimum three character classes must be used from below:
    • Uppercase letters (A-Z)
    • Lowercase letters (a-z)
    • Numbers (0-9)
    • Special characters: ~!@$%^&*_-+=`|\(){}[]:;"',.?/
Keep me "signed in" info

Choosing "Keep me signed in" reduces the number of times you're asked to sign in on this device

To keep your account secure, use this option only on your personal devices.

error Continue modifying your quoted cart?

Please note: If you choose to continue modifying your order, you will lose quoted pricing.

  • Your cart will adjust to regular pricing of our products, as found on our site.
  • If you wish to go back to your original quoted pricing, it will be available on your quote history page in your account until it expires.
Or