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Stainless Steel 904L
Stainless Steel
 904L Stainless Steel
Stainless Steel 904L

Stainless steel 904L

904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid.
Product introduction
904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. The steel is also resistant to stress corrosion cracking and crevice corrosion. 904L is non-magnetic, and offers excellent formability, toughness and weldability.
904L contains high amounts of expensive ingredients, such as molybdenum and nickel. Today, most of the applications that employ grade 904L are replaced by low-cost duplex stainless steel 2205.
ITEM Stainless Steel Sheet From China Facotry
Brand BAOSTEEL, JISCO, TISCO, etc.
Grade

201.202.301.302.304.304L.310S.316.316L.321.430.430A.309S.2205.2507.2520.430.630.631

.410.440.904Lect. Or Customized

Certificate

SGS,BV,IQI,TUV,ISO,etc

Surface No.1, 2B, BA, 8K Mirror, Hairline,satin, Embossed,brush,No.4,HL,matt,pvc film,laser film.
Standard GB, AISI, ASTM, ASME, EN, BS, DIN, JIS
Package  Standard export sea-worthy packing or customized
MOQ 1Ton
Technical data
Chemical Composition
Grade C Mn Si P S Cr Mo Ni Cu
904L min.
max.
-
0.02
-
2
-
1
-
0.045
-
0.035
19
23
4
5
23
28
1
2

Mechanical Properties
Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) Brinell (HB)
904L 490 220 36 70-90 typical 150

Physical Properties
Grade Density
(kg/m3)
Elastic Modulus
(GPa)
Mean Co-eff of Thermal Expansion (µm/m/°C) Thermal Conductivity
(W/m.K)
Specific Heat 0-100°C
(J/kg.K)
Elec Resistivity
(nΩ.m)
0-100°C 0-315°C 0-538°C At 20°C At 500°C
904L 7900 190 15 - - 11.5 - 500 952

Grade Specification Comparison
Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
904L N08904 904S13 - 1.4539 X1NiCrMoCuN25-20-5 2562 -

Possible Alternative Grades
Grade Reasons for choosing grade 904L
316L A lower cost alternative, but with much lower corrosion resistance.
6Mo A higher resistance to pitting and crevice corrosion is needed.
2205 A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300°C.)
Super duplex Higher corrosion resistance is needed, together with a higher strength than 904L.

Stainless Steel Seamless Pipe

Item
Standard ASTM A213/A213M ASTM A312/A312M JIS G 3459
Grade TP304
TP316
TP317
TP347
TP309H*
TP304L
TP316L
TP317L
TP310S
TP310H*
TP321H△
TP304
TP316
TP317
TP317
TP317*
TP304L
TP316L
TP317L
TP310S
TP310H*
TP321H△
SUS 304TB
SUS 316TB
SUS 317TB
SUS 310TB
SUS 321TB
SUS 321HTB*
SUS 304LTB
SUS 316LTB
SUS 317LTB
SUS 310LTB
SUS 347TB
Yield Strength ≥170;  ≥205 ≥170;  ≥205 ≥170;  ≥205
Tensile Strength ≥485;  ≥515 ≥485;  ≥515 ≥485;  ≥520
Elongation ≥35 ≥35 ≥30;  ≥35
Flattening test(mm) H=1.09t/(0.09+t/D)and test completeness H=1.09t/(0.09+t/D)and test completeness H=1.09t/(0.09+t/D)
Expanding test(mm) Expanding rate of inside diameter is21-68%   α=60°  Expanding12%D
Grain size "*""△"ASTM E112"△"No.7or thicker "*""△"ASTM E112"△"No.7or thicker “*”、JIS G0551  7# or 7#above
Hydraulic test(MPa) D Pmax Hydraulic test
p=220.6t/D
designated by user and can be replaced by nondestructive
flaw detection
D Pmax ASTM A530
/A530M
D≤270mm
P=2Rt/D
in the formula R=50%σ0.2
P=2Rt/D  in the formula
R=0.6σ s
can be replaced by nonderstructive flaw detection
<25.4 7    
25.4-<38.1 10 ≤88.9 17
38.1-<50.8 14    
50.8-<76.2 17 >88.9 19
76.2-<127 24    
≥127 31    
Ntergranular corrosion test ASTM  A262  E method (supplemental requirement) ASTM  A262  E method (supplemental requirement) JIS G0575(special requirement)
Nondestructive flaw
detection
ASTM  E213  E309  E426 ASTM  E213  E309  E426 Can use eddy current or ultrasonic flaw detection eddy current JIS G0583EV ultrasonic JIS G0582 UD
Heat treatment Requirements Requirements Requirements
Permitted variations in
outside diameter
(mm)
Outside diameter Permitted variations
in outside diameter
Outside diameter Permitted variations Outside diameter Permitted variations
<25.4 ±0.10 10.3-48.3 +0.40/-0.80 <30 ±0.3
25.4-≤38.1 ±0.15 >48.3-114.3 +0.80/-0.80
>38.1-<50.8 ±0.20 >114.3-219.1 +1.60/-0.80
50.8-<63.5 ±0.25 >219.1-457.2 +2.40/-0.80 ≥30 ±1%
63.5-<76.2 ±0.30 >457.2-660.4 +3.20/-0.80
76.2-≤101.6 ±0.38 >660.4-864 +4.00/-0.80
>101.6-≤190.5 +0.38/-0.64 >864-1219.2 +4.80/-0.80    
Permitted variations
in wall thickness
>190.5-≤228.6 +0.38/-1.14 Permitted variations
in wall thickness(mm)
±12.5%t
t<2 ±0.2
Outside diameter Permitted variations
in wall thickness
≤38.1 +20%t/-0 t≥2 ±10%
>38.1 +22%t/-0
Bending Reasonable straightness Reasonable straightness Practical straightness
Other requirements HRB<90 HRB<90 Hardness HRB<90(special requirement)
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