Datasheet

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1.4548

Brand name

17-4 PH®

Standards

Material No.
1.4548
EN Designation
X5CrNiCuNb17-4-4
AISI/SAE
630
UNS
S17400

Description

1.4542 / AISI 630 / 17-4PH® is a martensitic chromium-nickel-stainless steel, stabilized with niobium.

Special properties

Martensitic precipitation hardenable chromium-nickel-copper steel possessing high strength and toughness. Further strength increments can be obtained by cold forming, followed by a precipitation hardening treatment.

Chemical Composition

C
%
≤ 0.07
Si
≤ %
1.00
Mn
≤ %
1.00
P
≤ %
0.025
S
≤ %
0.025
Cr
%
15.0-17.5
Ni
%
3.00-5.00
Cu
%
3.00-5.00
Nb
%
0.15-0.45

Mechanical Properties 20°C

Hardness HB 30
≤ HB
360
0.2% Yield strength Rp
≥ N/mm²
1000
Tensile strength Rm
N/mm²
1070-1270
Elongation A5
≥ %
10
Modulus of elasticity
kN/mm²
200

Physical Properties 20°C

Density
g/cm³
7.8
Specific heat capacity
J/kg K
500
Thermal conductivity
W/m K
16
Electrical resistivity
Ω mm²/m
0.71

Suitable welding
filler materials

1.4542

Application

Aircraft industry, high strenght corrosion resistant parts

Available forms for 1.4548 / 17-4 PH®

Sheets/Plates
Lieferform
Bars
Lieferform
Forged / cast parts
Lieferform
Finished part (drawing)
Lieferform