Location » Home » Grades > Structural Steel > 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070
DIN 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 Details
DIN 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 Standard Download
Chemical composition(wt.%) of 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 grade:
| Elements |
Min.（≥） |
Max.（≤） |
Similar |
Remarks |
| C |
0.17 |
0.25 |
|
|
| Mn |
0.30 |
0.50 |
|
|
| Si |
0.30 |
0.60 |
|
|
| P |
- |
0.035 |
|
|
| S |
- |
0.035 |
|
|
| Cr |
1.20 |
1.50 |
|
|
| Ni |
- |
0.60 |
|
|
| Mo |
1.00 |
1.20 |
|
|
| V |
0.25 |
0.35 |
|
|
Mechanical properties of grade 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070
Yield Strength,Rp 0.2(MPa)
| Condition |
Min |
Max |
Similar |
Note |
| QT |
550 |
|
|
|
Tensile Strength,Rm(MPa)
| Condition |
Min |
Max |
Similar |
Note |
| QT |
700 |
850 |
|
|
Impact,Kv/Ku(J)
| Condition |
Min |
Max |
Similar |
Note |
| QT |
63 |
|
|
|
Elongation,A(%)
| Condition |
Min |
Max |
Similar |
Note |
| QT |
16 |
|
|
|
Reduction of area,(%)
| Condition |
Min |
Max |
Similar |
Note |
| QT |
60 |
|
|
|
Hardness
| Condition |
Type |
Min |
Max |
Similar |
Note |
Related properties
| 200℃ - Yield Strength 500 MPa |
| 300℃ - Yield Strength 460 MPa |
| 400℃ - Yield Strength 412 MPa |
| 500℃ - Yield Strength 334 MPa |
| 550℃ - Yield Strength 275 MPa |
| 600℃ - steel in hydrogen containing Partial pressure kG/cm2 = 1 |
| 380℃ - steel in hydrogen containing Partial pressure kG/cm2 = 100 |
| 330℃ - steel in hydrogen containing Partial pressure kG/cm2 = 150 |
| 325℃ - steel in hydrogen containing Partial pressure kG/cm2 = 200 |
| 320℃ - steel in hydrogen containing Partial pressure kG/cm2 = 300 |
| 310℃ - steel in hydrogen containing Partial pressure kG/cm2 = 400 |
| 300℃ - steel in hydrogen containing Partial pressure kG/cm2 = 500 |
| 280℃ - steel in hydrogen containing Partial pressure kG/cm2 = 800 |
21CMoV5-7 alloy structural steel and its 1.7709 replacement alloys belong to the group of high temperature boiler steels for energy industries. They are used in the production of components/subassemblies for the power industry, working at the temperatures up to 550 oC for small parts and for large forgings. The main applications of these grades of steel are rotors of steam turbines, rotor blades, shaft forgings, reservoirs and covers for up to 550 ℃ temperatures, nuts, tubes for high temperatures up to 540 ℃.
21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 - Form of Supply
| Product type |
Products |
Dimension |
Processes |
Deliver Status |
| Plates / Sheets |
Plates / Sheets |
0.08-200mm(T)*W*L |
Forging, hot rolling and cold rolling |
Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Steel Bar |
Round Bar, Flat Bar, Square Bar |
Φ8-1200mm*L |
Forging, hot rolling and cold rolling, Cast |
Black, Rough Turning, Shot Blasting, |
| Coil / Strip |
Steel Coil /Steel Strip |
0.03-16.0x1200mm |
Cold-Rolled & Hot-Rolled |
Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Pipes / Tubes |
Seamless Pipes/Tubes, Welded Pipes/Tubes |
OD:6-219mm x WT:0.5-20.0mm |
Hot extrusion, Cold Drawn, Welded |
Annealed, Solution and Aging, Q+T, ACID-WASHED |
