Page 101 - PCMI December 2017 Journal

Material Proper es Of High Performance Precision St1ri1p/2St6e/e1l7 Jonas Nilsson |R&D Mgr. Precision Strip | Sandvik Materials Technology | SE
CONDITIONS
STAINLESS STEEL – 0.305 MM, STANDARD
Valve steel
Grade
Version
Thickness
Flatness
Surface finish
Surface condition
Thickness
Sandvik 7C27Mo2
11
T3
P3
Y8
Polished
0.076 < t < 0.50 mm
Sandvik Hiflex
11
T3
P3
Y8
Polished
0.076 < t < 0.50 mm
Hardened and tempered stainless precision strip
Sandvik 7C27Mo2
04
T1
P1
Y7
Polished
0,128 < t < 0,59
Sandvik 7C27Mo2
Med.BS
T1
P1
Y6
Polished
Y8 Ra (average) 0,08 μm Ra limits 0,05 – 0,125 μm Y7 Ra (average) 0,16 μm Ra limits 0,1 – 0,25 μm Y6 Ra (average) 0,32 μm Ra limits 0,2 – 0,5 μm
T1 +- 0,013 mm for width < 250 mm
T3 +-0,007 mm for width < 250 mm P1 0,4% of nominal width
P3 0,2% of nominal width
METALLURGY
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Issue 130 December 2017 PCMI Journal Page 100
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