42CrMo4 1.7225 Steel Round Bar Sheet Plate

42CrMo4 steel is super high strength alloy steel with high hardenability and toughness and it has no temper brittleness. And it also be called DIN 1.7225 steel. After quenching and tempering, it will get high fatigue strength. Its impact toughness is great at low temperatures. It’s a good industry material to produce big and medium plastic molds with the demand for high strength and toughness. And it can be used to make manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, highly loaded connecting rods and spring clips. 42CrMo4 steel can also be used for oil deep well drill pipe joints and fishing tools below 2000m.

42CrMo4 1.7225 Steel Round Bar Sheet Plate Supply Range
Round BarDia:20-300mm; Length: Can be customizedBlack Surface/Bright Surface /Grinded/Peeled/Turned
Sheet/Plate/SlabThickness: 20-300mm; width: Can be customized;
Length: Can be customized
Black Surface/Bright Surface /Grinded/Peeled/Turned

42CrMo4 Steel Grade Equivalent Chart

Country China USA JAPAN Germany/UK/France ISO
Standard GB/T 3077-1999 ASTM A29/A29M-05 JIS G4053-2008 EN 10083/3-2006 ISO 683/1:1987
Grades 42CrMo(A30422) 42CrMoA(A30423) 42CrMoE 4142 SCM440 42CrMo4(1.7225) 42CrMo4 42CrMoS4

42CrMo4 Steel Bar Chemical Composition

STAND Grade C(%) Mn(%) P(%) S(%) Si(%) Cr(%) Mo(%) Ni(%) Cu(%)
GB/T 3077-1999 42CrMo(A30422) 0.38-0.45 0.50-0.80 MAX 0.035 MAX 0.035 0.17-0.37 0.90-1.20 0.15-0.25 MAX 0.30 MAX 0.30
GB/T 3077-1999 42CrMoA(A30423) 0.38-0.45 0.50-0.80 MAX 0.025 MAX 0.025 0.17-0.37 0.90-1.20 0.15-0.25 MAX 0.30 MAX 0.25
GB/T 3077-1999 42CrMoE 0.38-0.45 0.50-0.80 MAX 0.025 MAX 0.015 0.17-0.37 0.90-1.20 0.15-0.25 MAX 0.30 MAX 0.25
ASTM A29/A29M-05 4142 0.40-0.45 0.75-1.00 MAX 0.035 MAX 0.040 0.15-0.35 0.80-1.10 0.15-0.25
JIS G4053-2008 SCM440 0.38-0.43 0.60-0.90 MAX 0.030 MAX 0.030 0.15-0.35 0.90-1.20 0.15-0.30 MAX 0.25
EN 10083/3-2006 42CrMo4(1.7225) 0.38-0.45 0.60-0.90 MAX 0.025 MAX 0.035 MAX 0.40 0.90-1.20 0.15-0.30
ISO 683/1:1987 42CrMo4 0.30-0.37 0.60-0.90 MAX 0.035 MAX 0.035 0.10-0.40 0.90-1.20 0.15-0.30
ISO 683/1:1987 42CrMoS4 0.30-0.37 0.60-0.90 MAX 0.035 0.020-0.040 0.10-0.40 0.90-1.20 0.15-0.30

DIN 42CrMo4 Steel Physical Properties

Density Specific Heat Capacity Linear Expansion Coefficient Thermal Conductivity Electrical Resistivity
7.83 g/cm³ 0.473 kJ/(kg*K) 11.2 K-1 0.42 kW/(cm*K) 0.223 Ω*cm

42CrMo4 Steel Mechanical Properties

Size Yield Strength Tensile Strength Elongation
D≤16mm, T≤8mm Min 900 N/mm² 1100-1300 N/mm² Min 10%
16 < D ≤ 40mm, 8 < T ≤ 20mm Min 750 N/mm² 1000-1200 N/mm² Min 11%
40 < D ≤ 100mm, 20 < T ≤ 60mm Min 900 N/mm² 900-1100 N/mm² Min 12%
100 < D ≤ 160mm, 60 < T ≤ 100mm) Min 900 N/mm² 850-950 N/mm² Min 13%
160 < D ≤ 250mm, 100 < T ≤ 160mm Min 900 N/mm² 750-900 N/mm² Min 14%

DIN 42CrMo4 Steel Application

It can be used for statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. And it also can be produced mining spare parts, induction hardened pins, fastener accessories, drilling equipment in oil and gas such as drill collars, etc.

42CrMo4 Steel Round Bar Characteristics

  1. High strength and hardenability
  2. Great toughness, the deformation is small in the quenching
  3. It has high creep resistance and long-time strength

42CrMo4 Steel Round Bar Sheet Plate Heat Treatment

42CrMo4 steels bar and plate can be annealed, quenched, and forged. Here are some points that we need to know about it.

Forging: 1050-850℃
Rolling: 1050-850℃
Quenching: 820-860℃ / O, W (Austenitizing Period: at least 30min; Quenching Agent: Oil or Water)
Tempering: 540-680℃
Normalizing Annealing: 840-880℃
Soft Annealing: 680-720℃
End Quench Test: 850±5℃

DIN 42CrMo4 Steel Sheet Annealing
Heat steel grade 42CrMo4, Slowly and gradually forge it in the desired and do it comprehensively with the temperature range of 800-850°C
Slowly and gradually cool the furnace to the temperature of Celsius 480°C
Allow it to cool slowly i.e. annealing the steel in the air.
42CrMo4+qt (Quenched and Tempering)
Heat it slowly to Celsius 880°C
Soak the steel in oil at this temperature in order to quench it
As the steel reaches the room temperature, temper it by heating it to a desirable temperature of five hundred and sixty degree Celsius.
Take off the 42CrMo4 grade alloy from the furnace and allow it to cool in the air.

DIN 1.7225 Steel Material Forging
Preheated it slowly with uniformity
Elevate the forging temperature to the range of Celsius i.e. 1150-1200℃
Make sure to maintain the temperature of forging beyond Celsius 850℃

42CrMo4 Steel Bar Sheet Plate Supply

We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.

We are a professional special steel stockist and supplier with a high-quality stand for many years. As a professional 42CrMo4 steel material supplier, please contacts us for any request for it. Songshun Steel always with you.

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