Stainless Steel 304/304L, UNS S30400
ASTM A276, ASTM A479, ASTM A312, ASTM A213, ASTM A269, ASTM A240, AMS 5639H, ASME SA276, QQ-S-763, Mil-S-862B/1
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!
304-304L 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 Area | Hardness HB |
| 85[585] | 35[240] | 40 | 50 | 150 |
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.