Alloy 304/304L Technical Information
Robert-James Sales, Inc.
   Piping Definitions Tube Stainless Steel Alloys Specifications Conversion Calculators 

 
A l l o y s

Alloy 20
2205
Alloy C-276
317L
310S
321/321H
347/347H
254SMO
AL-6XN
6061 T6
904L
410
304/304L
316/316L
Alloy 200
Alloy 400
Alloy 600
Alloy 625
Alloy 800/800H/800HP
Alloy 825

304/304L
Chemical Composition %


C Cr Mn NI P S Si
Max   Max   Max Max Max
0.035 18.0-20.0 2.0 8.0-13.0 0.040 0.030 0.75

AVAILABILITY
Seamless Pipe 1/4" - 20"
Weld Pipe 1/2" - 24"
Butt-Weld Fit. 1/2" - 24"
Butt-Weld Fit. 1/2" - 12"
Pressure Fittings 1/4" - 4"
150# Fittings/Nipples 1/4" - 4"
Valves 1/2" - 24"
Tubings 1/4", 3/8", 1/2", 3/4", 1"
Flanges 1/2" - 24"
Bar 1/8" - 12"

SPECIFICATIONS
ASTM
A312, A376, A358, A269, A249, A403, A182, A351
ASME
SA312, 5A376, SA358, SA269, SA249, SA403, SA182, SA351

DESCRIPTION
304 stainless is a low carbon (0.08% max) version of basic 18-8 also known as 302. Type 302 has 18% chromium and 8% nickel. Type 304 has slightly lower strength than 302 due to its lower carbon content. Type 304 finds extensive use in welding applications because the low carbon permits some exposure in the
carbide precipitation range of 800 0 F - 1500 OF without the need for post-annealing operations. However, the severity of corrosive environments may necessitate annealing after welding or the use of 304L. Type 304L has a carbon content of 0.03% or less. This alloy can be used in the as-welded condition without becoming susceptible to intergranular corrosion.

DESIGN FEATURES
Oxidation resistance up to 1650 0 F for
continuous service and up to 1 1500 deg.F where cyclic heating is involved.
General purpose corrosion resistance.
Non-hardenable except by cold working.
Non-magnetic except when cold worked.
May be susceptible to chloride stress corrosion cracking.
Used where field working is employed.

TYPICAL APPLICATIONS
Sanitary
Dairy and Food processing
Heat exchangers, evaporators
Feedwater heaters

TENSILE REQUIREMENTS
Tensile Strength (KSI) 70
Yield Strength (KSI) 25

KSI can be converted to MPA (Megapascals) by multiplying by 6.895.

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