25CrMo4/1.7218/SCM430

EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels

EN 10132-3: 2000 Cold rolled narrow steel strip for heat treatment. Technical delivery conditions. Steels for quenching and tempering

EN 10216-2: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified elevated temperature properties

EN 10305-1: 2010 Steel tubes for precision applications. Seamless cold drawn tubes. Technical delivery conditions

EN 10269: 1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

EN 10263-4: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for steels for quenching and tempering

EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steel

EN 10297-1: 2003 Seamless circular steel tubes for mechanical and general engineering purposes. Non-alloy and alloy steel tubes. Technical delivery conditions

Chemical Composition

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4130	0.28-0.33	0.40-0.60	0.035	0.040	0.15-0.35	0.80-1.10	0.15-0.25
EN10250 /EN10083	25CrMo4/ 1.7218	0.22-0.29	0.60-0.90	0.025	0.035	≦0.40	0.90-1.2	0.15-0.30
JIS G4105	SCM430/ SCM2	0.28-0.33	0.60-0.85	0.030	0.030	0.15-0.35	0.90-1.2	0.15-0.30

Equivalent Grades of Steel 25CrMo4(1.7218)

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4130	0.28-0.33	0.40-0.60	0.035	0.040	0.15-0.35	0.80-1.10	0.15-0.25
EN10250 /EN10083	25CrMo4/ 1.7218	0.22-0.29	0.60-0.90	0.025	0.035	≦0.40	0.90-1.2	0.15-0.30
JIS G4105	SCM430/ SCM2	0.28-0.33	0.60-0.85	0.030	0.030	0.15-0.35	0.90-1.2	0.15-0.30

Description of Steel 25CrMo4(1.7218)

25CrMo4 is a heat-resistant, heat-treatable steel grade that is often used for components with high loads in motorsport, industry and in aviation. Among other things, screws, crankshafts, roll cages, chassis components and vehicle frames are made from this. Due to its chemical composition, 25CrMo4 is suitable for hardening and has a tensile strength of over 650 N / mm² in the tempered state. 25CrMo4 is valued for its good weldability and bendability.It has excellent hardenability and tempering properties by adding proper Cr, Mo and other alloy elements.Through suitable tempering treatment,it maintains high strength and high toughness,as well as high temperature resistance,wear-resistant properties. 25CrMo4 Steel is suitable for the parts which serve in a complex environment.

Size Tolerance

Surface Finish	Size Tolerance	Length
Black For Forged condition	(0，+5mm)	Multiple Length/Fixed Length
Black For Rolled condition	(0，+1mm)
Rough Turned	(0，+3mm)

Mechanical properties of Steel 25CrMo4(1.7218)

Tensile Strength:min 740 N/mm²

Yield Strength:min. 590 N/mm²

Elongation:min.15 %(l)

Kv-Imapct value:min.80J (l)

Heat Treatment Conditions

Heat Treatment Process	Temperature Range	Cooling Method
Normalizing	860-900°C	Slow cooling in air
Soft Annealing	680-720°C	Slow cooling in furnace
Stress Relieving	525-620°C	Air cooling
Hardening	840-880°C	Oil or water quenching
Tempering	540-680°C	Air cooling

Product Type	Material Grades	Specification
Hot-Rolled Bars	25CrMo4, 1.7218	Peeled, Bright and Drawn
Forged Bars/Open-Die Forgings	25CrMo4, 1.7218	N/A
Cold Drawn Tubes	AISI 4130, 25CrMo4, 1.7218	N/A
Cold Rolled Strips	25CrMo4, 1.7218	N/A
Sheets and Plates	AISI 4130, 25CrMo4, 1.7218	N/A