Datasheet

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1.4568

Brand name

17-7 PH®

Standards

Material No.
1.4568
EN Designation
X7CrNiAl17-7
AISI/SAE
631
UNS
S17700

Description

1.4564 / 17-7PH® is an austenitic chromium-nickel stainless steel with aluminum addition.

Special properties

Excellent fatigue properties, good corrosion resistance, good formability and minimum distortion upon heat treatment. It is easily formed in the annealed condition, hardened to high strength levels by heat treatments to condition CH900, RH950 or TH1050. The exceptional high strength of condition CH900 offers many new advantages where limited ductility and workability are permissible. In its heat treated condition, this alloy provides exceptional mechanical properties at temperatures up to 480 °C.

Chemical Composition

C
%
≤ 0.09
Si
≤ %
0.70
Mn
≤ %
1.00
P
≤ %
0.04
S
≤ %
0.015
Cr
%
16.0-18.0
Ni
%
6.50-7.80
Al
%
0.70-1.50

Mechanical Properties 20°C

Hardness HB 30
≤ HB
230
0.2% Yield strength Rp
≥ N/mm²
280
Tensile strength Rm
N/mm²
900-1100
Elongation A5
≥ %
35
Modulus of elasticity
kN/mm²
200

Physical Properties 20°C

Density
g/cm³
7.81
Specific heat capacity
J/kg K
500
Thermal conductivity
W/m K
16
Electrical resistivity
Ω mm²/m
0.8

Suitable welding
filler materials

1.4564

Application

Aircraft industry, high strenght corrosion resistant parts

Available forms for 1.4568 / 17-7 PH®

Sheets/Plates
Lieferform
Bars
Lieferform
Wire
Lieferform