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grade |
Norma |
Chemical compostion | |||||||||
c | mn | si | p | s | cu | cr | ni | mo | inne | ||
17 CrNi 16 17CrNi16 | STAS | 0,14 0,19 | 0,40 0,60 | 0,17 0,37 | max 0,035 | max 0,035 | max 0,30 | 1,40 1,70 | 1,40 1,70 | max 0,15 | - |
Hot forming andheat treatment:
Forging or hot rolling:1100 - 850°C
Normalising:850 - 880°C/air
Soft annealing:650 - 700°C/furnace
Carburising:880 - 980°C
Core hardening:830 - 870°C/oil
Intermediate annealing:630 - 650°C
Case hardening:780 - 820°C/oil
Tempering:150 - 200°C
Treated for cold shearability, +S:max. 255 HB
Soft annealed, +A:max. 229 HB
Treated for strength, +TH:175 - 229 HB
Treated for ferrite and pearlite
structure and hardness range,
+FP: 156 - 207 HB
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