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AISI 4142 /1.7225 /DIN 42CrMo4

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Specification, Chemical & Mechanical Performance

We can produce 1.7225, DIN 42CrMo4, AISI 4142 stainless steel round rods, 1.7225, DIN 42CrMo4, AISI 4142 forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With Bozhong Group production experience, strict control 1.7225, DIN 42CrMo4, AISI 4142 chemical composition and 1.7225, DIN 42CrMo4, AISI 4142 mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.

Round bar steel: 1mm to 3500mm

Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.

Designation by Standards

Brand Name	Ravne No.	Mat. No.	DIN	EN	AISI
VCMO140	724	1.7225	42CrMo4	42CrMo4	4142

Chemical Composition (in weight %)

C	Si	Mn	Cr	Mo	Ni	V	W	Others
0.41	0.20	0.75	1.05	0.23	-	-	-	-

Description
This is one of the chromium, molybdenum, manganese low alloy steels noted for toughness, good torsional strength and good fatigue strength.

Applications
Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 190-210
Density [g/cm³]: 7.84

Soft Annealing
Heat to 680-720^oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 241.

Hardening
Harden from a temperature of 820-850, 830-860^oC followed by water or oil quenching.

Normalizing
Normalizing: 840-880^oC

Tempering
Tempering temperature: 540-680^oC

Mechanical Properties in Quenched and Tempered Condition

Diameter (mm)	0.2 % proof stress (N/mm²)	Tensile strength (N/mm²)	Elongation (%)	Reduction of area (%)	Notch impact energy (ISO-V) (J)
up to 16	900	1100-1300	10	40	35
17-40	750	1000-1200	11	45	40
41-100	650	900-1100	12	50	40
101-160	550	800-950	13	50	40
161-250	500	750-900	14	55	40

Diagram Tempering Temperature – Mechanical Properties

Hardenability in the end-quench test (Hardness (HRC) vs. Distance (mm))

Hardness	1.5	3	5	7	9	11	13	15	20	25	30	35	40
H max.	61	61	61	60	60	59	59	58	56	53	51	48	47
H min.	53	53	52	51	49	43	40	37	34	32	31	30	30
HH max.	61	61	61	60	60	59	59	58	56	53	51	48	47
HH min.	56	56	55	54	52	48	46	44	41	39	38	36	36
HL max.	58	58	58	57	56	54	53	51	49	46	44	42	41
HL min.	53	53	52	51	49	43	40	37	34	32	31	30	30

Forging
Hot forming temperature: 1050-850^oC.

Machinability
Machinability of this alloy is good in the annealed condition. In the heat treated and quenched condition machining is best limited to finish grinding.

Corrosion Resistance
This alloy is a steel and is not corrosion resistant. Protective coating must be used in corrosive, or water, environments.