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Stainless Steel 304/304L, UNS S30400

Stainless Steel 304-304L UNS S30400 Stainless Steel

ASTM A276, ASTM A479, ASTM A312, ASTM A213, ASTM A269, ASTM A240, AMS 5639H, ASME SA276, QQ-S-763, Mil-S-862B/1

Specs
Level 4
Strength
Level 4
Toughness
Level 4
Formability
Level 3
Weldability

Farmers Copper LTD. stocks 304 Stainless in Round Bar, Square bar, Hex Bar, Flat Bar, Sheet, Plate, Pipe, Tube and Angle. 304 stainless has excellent strength, toughness, formability and good weldability. This alloy is the most widely used stainless steel and is great for the industrial and food industries. We are always trying to accommodate our customer’s needs, so call us today and we can meet your exact requirements.

Farmer's Copper Ltd. has been serving the metal industry since 1920 and our knowledgeable sales staff is available to assist you in your stainless steel requirements. Please contact us at 1-800-638-2589 for more information regarding Stainless Steel 304 Plates or other metals!

304 stainless steel

304-304L UNS S30400 Stainless Steel Shapes

Pipe & Tube

Round, Square, Hex, & Flat Bar

Sheet

304-304L UNS S30400 Stainless Steel Sizing

Round Bar:  1/8” to 11” dia

Square Bar:  1/8” to 2”

Hex Bar:  3/8” to 2”

Sheet:

  • 304/304L # 2B:
  • 26 GA to 10 GA
  • 304 # 4 PVC:
  • 24 GA to 10 GA

Plate: thickness: 3/16” to 1”

Pipe: 1/4” (sch 40) to 4”

Tube: 1/8” OD to 1-5/8” OD

Angle: 1/8” X 1” X 1” to 3/8” X 4” X 4”

Flat Bar:

  • 1/8” thick x 1/2” to 4” wide
  • 3/16” thick x 1/2” to 4” wide
  • 1/4” thick x 1/2” to 6” wide
  • 3/8” thick x 3/4” to 8” wide
  • 1/2” thick x 3/4” to 8” wide
  • 5/8” thick x 1” to 4” wide
  • 3/4” thick x 1” to 5” wide
  • 1” thick x 1-1/2” to 6” wide
  • 1-1/4” thick x 1-1/2” to 4” wide
  • 1-1/2” thick x 2” to 4”
  • 2” thick x 2-1/2” to 6” wide

Industries

Farmer’s Copper Ltd. extends its services throughout many industries. We provide the raw copper alloy materials in various standard shapes as well as custom cut copper alloys.

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Our 304-304L UNS S30400 Stainless Steel Inventory & Properties

Farmer’s diverse inventory of products and services offered provides our customers the largest and most extensive selection of alloys available, cut to precise specifications, and delivered with total quality control.

Standard Chemical Composition

Elements   C MN P S SI CR NI
UNS 230400 AISI 304 Min %           18 8
Max % 0.08 2 0.045 0.03 1 20 10.5
UNS S30403 AISI 304L Min %           18 8
Max % 0.03 2 0.045 0.03 1 20 12

Nominal Mechanical Properties (annealed condition)

Tensile Strength
ksi[MPa]
Yield Strength
ksi[MPa]
% Elong 4d% Reduction in AreaHardness HB
85[585]35[240]4050150

Nominal Physical Properties

The values are at room temperature, unless otherwise specified.

Density 7.9 kg/m³  Mean Co-efficient of Thermal Expansion 0°C - 100°C 17.2 um/mK
Modulus of Elasticity 193
Specific Heat Capacity 500J/kgK Melting Range 1400°C - 1450°C
Thermal Conductivity @100° C 16.2W/mK Relative Permeability* 1.02

*Note: This grade is non-magnetic in annealed condition but becomes slightly magnetic after cold working.

Properties at Elevated Temperature

The properties quoted below are typical of annealed 304 only, as strength values for 304L fall rapidly at temperatures above 425°C. These values are given as a guideline only, and should not be used for design purposes.

Short Time Elevated Temperature Tensile Properties

    Temperature (°C)
Property Type 100 300 500 600 700 800 900 1000 1100
Tensile Strength (Mpa) 304 510 435 410 360 245 135 75 40 20
321 525 405 380 335 265 175 100 60 25
0.2% Proof Stress (Mpa) 304 220 145 125 110 95 70      
321 210 165 140 130 115 95      
Elongation (% in 50mm) 304 52 40 36 35 35 37 42 73 96
321 50 43 37 37 48 68 62 62 87

Maximum Recommended Service Temperature (in oxidising conditions)

Operating Conditions Temperature (°C)
Type 304 321
Continuous 830 830
Intermittent 800 800

Properties at Sub-Zero Temperatures

The properties quoted below are typical of annealed CS304 only

Temperature (°C) 20 0 -10 -50 -100 -140 -196
Tensile Strength (Mpa) 616 885 976 1101 1281 1368 1609
0.2% Proof Stress (Mpa) 255 242 240 236 222 246 231
Elongation (%) 70 64 55 50 42 41 38
Impact Energy (J) 217 204 194 194 168 160 168

Our Commitment to Service

As a leading copper, brass, & bronze alloys supplier, Farmers Copper Ltd. attributes our success to serving our customers, through our service-minded employees and material readily available for prompt, accurate deliveries of copper, brass, bronze, stainless steel and other metal alloys.

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