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 (%)
StandardSteel GradeCSi (≤)Mn (≤)P (≤)S (≤)CrMoNi
EN 10088-3X105CrMo17
(1.4125)
0.95-1.201.001.000.0400.03016.00-18.000.40-0.80

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/cm37,7
MagneticYes
Electrical resistivity, μΩ·m0,8 (20 ℃)
Specific heat capacity, J/(kg·K)430 (20 ℃)
Thermal conductivity, (W/m·K)15 (20 ℃)
Modulus of elasticity, Gpa215 (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
EuropeanUSAISOJapanChina
StandardName (Steel number)StandardGradeStandardGradeStandardGradeStandardGrade
EN 10088-2; EN 10088-3;X105CrMo17 (1.4125)AISI
ASTM A276/A276M
440CISO 683-17X108CrMo17JIS G4303; JIS G4304; JIS G4305SUS 440CGB/T 12209Cr18Mo

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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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