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PRODUCT MATERIAL

Stainless Steel 304LDownload

 
304 is the original “18-8” stainless. It is produced in greater quantity than any other austenitic stainless steel. 304 provides useful resistance to corrosion in many environments ranging from moderately reducing to moderately oxidizing. Through the controlled addition of nitrogen, it is common for 304L to meet the mechanical properties of 304 straight grade. As a result, most products are dual certified as 304 and 304/304L.
Chemistry

 

Ni

Cr

Mn

Si

C

S

P

N

Fe

MIN

8.0

18.0

MAX

10.5

20.0

2.0

0.75

0.03

0.03

0.045

0.10

Balance

Specifications
AMS 5511, AMS 5513, AMS 5639, AMS 5647
ASME SA 240, ASME SA 312, ASME SA 479
ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 312, ASTM A 479
UNS S30400, UNS S30403
W. NR./EN 1.4301, W. NR./EN 1.4307
Inventory
304 / 304L Coil, 304 / 304L Flanges, 304 / 304L Hex Bar, 304 / 304L Pipe, 304 / 304L Plate, 304 / 304L Round Bar, 304 / 304L Sheet, 304 / 304L Stub Ends, 304 / 304L Tees, 304 / 304L Welding Products
Common Trade Names
304 Stainless, 304L Stainless
Features
 Good general corrosion resistance
 Ease of cleaning
 Excellent strength and toughness at cryogenic temperatures
 Good formability
 Good weldabilit
Applications
 Food processing and handling
 Heat exchangers
 Chemical process vessels
 Conveyors
 Architectural
Physical Properties
Density: 0.285 lb/inch3
Melting Range: 2550-2590°F
Poisson’s Ration: 0.3
Electrical Resistivity: 433Ohm-circ mil/ft

Temperature, °F

70

212

932

Coefficient* of Thermal Expansion, in/in°F x 10-6

9.2

Thermal Conductivity
Btu • ft/ft2 • hr • °F

9.4

12.4

Modulus of Elasticity Dynamic, psi x 106

29

* 70°F to indicated temperature.
Mechanical Properties
Representative Tensile Properties

Ultimate Tensile Strength, ksi

75

0.2% Yield Strength, ksi

30

Elongation, %

40

Hardness MAX, Brinell

201

Typical Tensile and Impact Properties

Temperature, °F

-425

-320

-100

70

400

800

1200

Ultimate Tensile Strength, ksi

250

230

150

90

70

66

48

0.2 % Yield Strength, ksi

100

70

50

35

23

19

15.5

Charpy Impact V-notch, ft-lbs

85

85

150