EN 1.4125 X105CrMo17 Steel Composition, Properties, Equivalent

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EN 1.4125 X105CrMo17 Steel

X105CrMo17 material (EN 1.4125 steel) is an European standard high carbon martensitic stainless steel. Due to its high carbon, chromium and molybdenum content, it has high strength, good hardness, corrosion resistance, wear resistance, and high temperature and low temperature dimensional stability.

Datasheet & Specification

The following tables and lists give the 1.4125 datasheet including chemical composition, physical properties and mechanical properties etc.

X105CrMo17 Steel Chemical Composition

The following table shows (1.4125) X105CrMo17 steel chemical composition

Chemical Composition (%)
Standard Steel Grade C Si (≤) Mn (≤) P (≤) S (≤) Cr Mo Ni
EN 10088-3 X105CrMo17
(1.4125)
0.95-1.20 1.00 1.00 0.040 0.030 16.00-18.00 0.40-0.80

Mechanical Properties of 1.4125 Steel

Material Brinell hardness: ≤285 HBW (Annealed), thickness ≤100.

Physical Properties

Notes:

  • 10-6·K-1 = 10-6/K
  • 1 Ω·mm²/m = 1 μΩ·m
  • 1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
  • 1 GPa = 1 kN/mm2
  • 1 MPa = 1 N/mm2
Physical Properties
Density, g/cm3 7,7
Magnetic Yes
Electrical resistivity, μΩ·m 0,8 (20 ℃)
Specific heat capacity, J/(kg·K) 430 (20 ℃)
Thermal conductivity, (W/m·K) 15 (20 ℃)
Modulus of elasticity, Gpa 215 (20 ℃)
212 (100 ℃)
205 (200 ℃)
200 (300 ℃)
190 (400 ℃)
Mean coefficient of thermal expansion, (10-6/K) 10,4 (20-100 ℃)
10,8 (20-200 ℃)
11,2 (20-300 ℃)
11,6 (20-400 ℃)

Heat Treatment Specification

  • Hot forming temperature: 1100-900℃ (cooling: slow cooling)
  • Annealing temperature: 780-840℃ (cooling: furnace, air).

Equivalent Grade

European X105CrMo17, 1.4125 stainless steel equivalent to US ASTM, ISO, Japanese JIS, and Chinese GB standard. (For reference)

X105CrMo17 (1.4125) steel equivalent
European USA ISO Japan China
Standard Name (Steel number) Standard Grade Standard Grade Standard Grade Standard Grade
EN 10088-2; EN 10088-3; X105CrMo17 (1.4125) AISI
ASTM A276/A276M
440C ISO 683-17 X108CrMo17 JIS G4303; JIS G4304; JIS G4305 SUS 440C GB/T 1220 9Cr18Mo

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1 Comment
  1. Tony Lehnig says

    Can the X105CRMo17 (which is same as 440C) be purchased in Europe?

    Germany?

    Poland?

    Is this an uncommon European metal?

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