X17U4 Stainless steels with structural hardening

Spécifications

Common name
17-4PH
630
EU
X5CrNiCuNb16 -4
USA
UNS:S17400

Typical composition

C
< 0.07
Ni
4
Cr
16,5
Cu
4
02
0,35

Applications

• Forgings and mechanical parts in stainless steel requiring very good mechanical properties and an acceptable coefficient of friction.

Mechanical properties

• Precipitation hardened martensitic stainless steel.
• Good resistance to various corrosive agents.
• Good weldability.

Mechanical features

Heat treatment
H + V 550°C
H + V 620°C
UTS (N/mm²)
1070
950
A (%)
10
16
KV -60°C (J)
120
140

Solution treated : H
Annealed : R
Thermo-mechanical treatment : TM
Quenched and tempered : T+RV
Sub-zero treatment : F
Solution treated and aged : T+RV

X17U4_1_FR

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See also

APX4

Martensitic stainless steels

Aero engine
Corrosion stainless steel
Fasteners
Surgical instruments

Spécifications

EU : X4CrNiMo16-5-1

T + Rv 400°C
T + Rv 580°C

MARVAL13X

Stainless steels with structural hardening

Aero engine
Aero structures
Brake system
Fasteners
Gear box
Heligrid
Landing grid

Spécifications

Common name : PH13-8Mo ; XM13
EU : X3CrNiMoAl13-8-2
USA : UNS:S13800

H + V 540°C
H + V 560°C

X15U5W

Stainless steels with structural hardening

Aero structures

Spécifications

Common name : 15-5PH ; XM12
EU : X5CrNiCu15-5
USA : UNS:S15500

H + V 550°C
H + V 620°C

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