EN 1.4125 X105CrMo17 Steel Composition, Properties, Equivalent

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