• 1.7220, DIN 34CrMo4, AISI 4135/4137 round bar
  • 1.7220, DIN 34CrMo4, AISI 4135/4137 forging
  • 1.7220, DIN 34CrMo4, AISI 4135/4137 sheet
  • 1.7220, DIN 34CrMo4, AISI 4135/4137 flat bar
  • 1.7220, DIN 34CrMo4, AISI 4135/4137 pipe
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1.7220, DIN 34CrMo4, AISI 4135/4137

We can produce 1.7220, DIN 34CrMo4, AISI 4135/4137 stainless steel round rods, 1.7220, DIN 34CrMo4, AISI 4135/4137 forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With DuoNian production experience, strict control 1.7220, DIN 34CrMo4, AISI 4135/4137 chemical composition and 1.7220, DIN 34CrMo4, AISI 4135/4137 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.

Production specification

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.

1.7220, DIN 34CrMo4, AISI 4135/4137 

Designation by Standards

Brand Name LH No. Mat. No. DIN EN AISI
VCMO135 723 1.7220 34CrMo4 - 4135/4137

Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.34 max. 0.40 0.75 1.05 0.23 - - - -

Description
Structural alloyed carbon steel.

Applications
Statically and dynamically stressed components for vehicles, engines and machines - axles, turbine components, chains, forgings, etc. 

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210 
Density [g/cm3]: 7.86
Thermal conductivity [W/m.K]: 41.9 
Specific heat capacity[J/g.K]: 0.46

Continuous Cooling Transformation (CCT) Diagram

Soft Annealing
Heat to 680-720oC, cool slowly. This will produce a maximum Brinell hardness of 223.

Noramlizing
Temperature: 850-890oC.

Hardening
Harden from a temperature of 830-890oC followed by oil or water quenching.

Tempering
Tempering temperature: 540-680oC.

Mechanical Properties in Hardening and Tempering 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 16 785 980-1180 11 45 41
17-40 665 880-1080 12 50 48
41-100 560 780-930 14 55 48
101-160 510 740-890 15 60 48
161-250 460 690-840 15 60 48

Diagram Tempering Temperature - Mechanical Properties

Forging
Hot forming temperature: 1050-850oC. 

Machinability
No data.
  

Mechanical properties

1.7220, DIN 34CrMo4, AISI 4135/4137 Mechanical properties,Our production completely according to the 1.7220, DIN 34CrMo4, AISI 4135/4137 standards to meet the 1.7220, DIN 34CrMo4, AISI 4135/4137 mechanical performance, can also according to the customer request, to meet the requirements of customers of 1.7220, DIN 34CrMo4, AISI 4135/4137 mechanical properties.

Heat treatment

1.7220, DIN 34CrMo4, AISI 4135/4137 Heat treatment,Our production completely according to the 1.7220, DIN 34CrMo4, AISI 4135/4137 standards to meet the 1.7220, DIN 34CrMo4, AISI 4135/4137 Heat treatment, can also according to the customer request, to meet the requirements of customers of 1.7220, DIN 34CrMo4, AISI 4135/4137 Heat treatment.

Machining

1.7220, DIN 34CrMo4, AISI 4135/4137 Machining,Our production completely according to the 1.7220, DIN 34CrMo4, AISI 4135/4137 standards to meet the 1.7220, DIN 34CrMo4, AISI 4135/4137 Machining, can also according to the customer request, to meet the requirements of customers of 1.7220, DIN 34CrMo4, AISI 4135/4137 Machining.

Welding performance

1.7220, DIN 34CrMo4, AISI 4135/4137 Welding performance,Our production completely according to the 1.7220, DIN 34CrMo4, AISI 4135/4137 standards to meet the 1.7220, DIN 34CrMo4, AISI 4135/4137 Welding performance, can also according to the customer request, to meet the requirements of customers of 1.7220, DIN 34CrMo4, AISI 4135/4137 Welding performance.

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