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31CrMoV9
Nitriding Steel Technical Features According to EN10085 |
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Material Name: |
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Material No: |
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Equivalent Qualities: |
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31CrMoV9 |
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1.8519 |
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1. |
CHEMICAL COMPOSITION |
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Chemical
Composition % by Mass |
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Quality |
C |
Simax. |
Mn |
Pmax. |
Smax. |
Al |
Cr |
Mo |
Ni |
V |
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31CrMoV9 |
0,27 – 0,34 |
0,40 |
0,40 – 0,70 |
0,025 |
0,035 |
– |
2,30 – 2,70 |
0,15 – 0,25 |
– |
0,10 – 0,20 |
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2. |
MECHANICAL FEATURES |
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Soft Annealing (+A): |
max. 248 HB |
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Quenched and Tempered (+QT) (Reclamation) |
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Mechanical
features in a reclaimed state (+QT) in room temperature |
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16mm<
d ≤40 mm |
40mm< d ≤100 mm |
100mm< d ≤160mm |
160mm< d ≤250mm |
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Re min. |
900 |
800 |
700 |
650 |
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Rm |
1100-1300 |
1000-1200 |
900-1100 |
850-1050 |
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Amin. |
9 |
10 |
11 |
12 |
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KV min. |
25 |
30 |
35 |
40 |
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Yield
Strength |
Re min. |
MPa |
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Tensile
Strength |
Rm |
MPa |
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Elongation |
Amin. |
% |
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Cross
Section Shrinkage |
Zmin. |
% |
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Notch
Impact Strength |
KVb min. |
Joule |
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1 MPa
= 1 N/mm2 |
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3. |
TECHNICAL DELIVERY CONDITIONS |
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EN 10085: 2001 Nitriding Steels. |
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4. |
AREAS OF USE |
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Nitriding steels are used in screws and
barrels of plastic extrusion machines, |
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gears,
shafts, heavy machine parts such as piston rod, dipping piston, |
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and ball screw, especially in large dimensions
and cross-section, and as auger and cylinder in plastic injection machines. |
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