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1.4539

Standards

Material No.
1.4539
EN Designation
X1NiCrMoCu25-20-5
AISI/SAE
904 L
UNS
N08904

Description

1.4539 / AISI 904L is a high-alloy austenitic stainless steel with a high molybdenum content, additional copper content and very low carbon content.

Special properties

Excellent corrosion resistance to sulfuric and phosphoric conditions. High resistance to localized corrosion such as pitting and crevice corrosion, as well as to stress-corrosion.

Chemical Composition

C
%
≤ 0.02
Si
≤ %
0.70
Mn
≤ %
2.00
P
≤ %
0.03
S
≤ %
0.01
Cr
%
19.0-21.0
Mo
%
4.00-5.00
Ni
%
24.0-26.0
N
%
≤ 0.15
Cu
%
1.20-2.00

Mechanical Properties 20°C

Hardness HB 30
≤ HB
230
0.2% Yield strength Rp
≥ N/mm²
230
Tensile strength Rm
N/mm²
530-730
Elongation A5
≥ %
35/30
Modulus of elasticity
kN/mm²
195

Physical Properties 20°C

Density
g/cm³
8
Specific heat capacity
J/kg K
450
Thermal conductivity
W/m K
12
Electrical resistivity
Ω mm²/m
1

Suitable welding
filler materials

1.4539; 1.4519

Application

Cellulose industry, offshore, refineries, seawater technology, hot sulphuric and phosphoric environment

Available forms for 1.4539 / AISI 904 L

Sheets/Plates
Lieferform
Bars
Lieferform
Wire
Lieferform
Tubes/Pipes
Lieferform
Fittings
Lieferform
Forged / cast parts
Lieferform
Finished part (drawing)
Lieferform