Datasheet

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swiss made
This document contains information based on average values as obtained from the results of laboratory tests and observations made on the material.
Ideal-Tek SA declines all responsibility from an improper use of the product described in this document.
High Alloy DX
TECHNICAL DATA SHEET
General notes:
» low carbon high alloy austenitic stainless steel, AISI 904L (UNS N08904)
» high-alloy austenitic stainless steel intended for use under severe corrosive conditions within the process industry
» very good resistance to attacks in acidic environments, e.g. sulphuric, phosphoric and acetic acid
» very good resistance to pitting in neutral chloride-bearing solutions
» very good resistance to stress corrosion cracking
» the grade is non-magnetic (95%) in all conditions and has excellent formability and weldability. The austenitic struc-
ture also gives this grade excellent toughness, even down to cryogenic temperatures.
» its maximum service temperature is at 450°C.
State annealed
Density 8.0 g/cm
3
Hardness, Vickers 250 HV
Tensile strength, ultimate 490 - 646 MPa
Tensile strength, yield 220 - 339 MPa
Elongation, break 35-40%
Modulus of elasticity 195 GPa
Mechanical properties
Resistivity 1 (Ohm
.
mm
2
)/m 20°C
Electrical properties
Coef. of lin. therm expansion 16.1 E-6/°C 20-100°C
Coef. of lin. therm expansion 16.9 E-6/°C 20-400°C
Specic heat capacity 0.45 J/(g
.
K) 20°C
Thermal conductivity 12 W/(m
.
K)
Max service temperature, air 450°C
Thermal properties
Elements Wt.% Elements Wt.% Elements Wt.% Elements Wt.% Elements Wt.%
C 0.02 Mn 2.0 S 0.035 Cr 23.0-19.0 Cu 2.0-1.0
Si 1.0 P 0.045 Ni 28-23 Mo 5.0-4.0 N 0.1
Composition

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