Mat.No. 1.8070, DIN 21CrMoV5-11

Mat.No. 1.8070, DIN 21CrMoV5-11

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Designation by Standards Brand Name Ravne No. Mat. No. DIN EN AISI PT759 759 1.8070 21CrMoV5-11 - - Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.21 0.45 0.45 1.35 1.10 max. 0.30 0.30 - - DescriptionSpecial structural steel. ApplicationsScrews and nuts and forged components for staem engines up to working temperatures of maximum 539oC.  Physical properties (avarage values) at ambient temperatureModulus of elasticity [103 x N/mm2]: 210 Density ...


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Designation by Standards

Brand Name Ravne No. Mat. No. DIN EN AISI
PT759 759 1.8070 21CrMoV5-11 - -

Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.21 0.45 0.45 1.35 1.10 max. 0.30 0.30 - -

Description
Special structural steel.

Applications
Screws and nuts and forged components for staem engines up to working temperatures of maximum 539oC. 

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210 
Density [g/cm3]: 7.80

Continuous Cooling Transformation (CCT) Diagram


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Time-Temperature Transformation (TTT) Diagram


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Soft Annealing
Heat to 650-740oC, cool slowly.

Hardening
Harden from a temperature of 900-950oC followed by oil or air quenching.

Tempering
Tempering temperature: 680-740oC.

Mechanical Properties in Quenched and Tempered Condition

Diameter (mm) 0.2 proof stress (N/mm2) Tensile stregth (N/mm2) Elongation (%) Reduction (%) Notch impact energy (ISO-V) (J)
Up to 160 540 690-830 16 - 55

0.2 Proof Stress (N/mm2) vs. Temperature (oC)

200oC 300oC 400oC 500oC
510 481 431 373

1% Creep Limit (N/mm2) vs. Temperature (oC)

Hours 450oC 500oC 540oC
10 000 353 235 120
100 000 275 167 68

Creep Rapture Strength (N/mm2) vs. Temperature (oC)

Hours 450oC 500oC 540oC
10 000 441 304 180
100 000 343 211 102

Forging
Hot forming temperature: 1100-850oC. 

Machinability
No data.

Forms manufactured: Please see the Dimensional Sales Program. 

Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.

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