13CrMo44/DIN 1.7335 Pipe Steel For Pressure Vessel Use

13CrMo44/Din 1.7335 alloy steel manufacturers and suppliers,supplied with round rods,square/flat bars,rollers,shafts,blocks,tubes and forging pieces.

13CrMo44/Din 1.7335  is a low-alloy steel containing chromium and molybdenum as strengthening elements.Similar to the Chinese grade 12CrMo,13CrMo44 steel has good cold strain plasticity, machinability and weldability.

13CrMo44 is generally used in the quenched and tempered condition.It is mainly used in the pressure vessel industry, such as main pipes under high temperature conditions, superheating pipes, and elastic elements under high temperature conditions.

13CrMo44 Pipe with QT conditon

Chemical Composition

13CrMo440.08-0.18 0.1-0.35 0.4-1.0 ≤0.035 ≤0.030.7-1.1 0.4-0.6
12CrMo0.1-0.15 ≤0.3 0.6-0.9 ≤0.025≤0.0250.9-1.2 0.15-0.25

Heat Treatment
Normalizing For 13CrMo44
1.Nominal normalizing temperature:890-940°C
2.Hold the temperature for several hours
3.Cooling in the air

Annealing  For 13CrMo44
1.Nominal Annealing temperature:680-720°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 180

Quenching and Tempering(QT)  For 13CrMo44
1.Nominal Hardening temperature:910-940°C
2.Hold at this temperature then quench in air
3.Tempering  as soon as possible when the temperature low to ambient
4.Heat uniformly to the suitable temperature of 650-720°C
5.keep the material out of the furnace ,then cool in the air

13CrMo44 Mechanical Property in Q&T condition

Tensile Strength Mpa Yield Strength MpaElongation %Reduction of Area %Impact Charpy-V,J
 ≥410  ≥265 ≥24  ≥60 ≥110

Quality Certification
A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.NDE test method/criteria

13CrMo44 Supply Form & Size

  • Round Bars:  Dia.80 – 1,000mm as Forged
  • Flat / Square Bars:  Thickness Max.800mm
  • Shafts, Rollers, Blocks,Tubes:  Customized or According to Drawing
  • Rolled Round Bars:  Dia.16 – 130mm with UT Assurance

Heat treatment: Normalizing (+N), Annealing (+A),Q&T
Surface finish:Black / Rough turned / Peeled