VDI3323 Group #1

Non-alloyed steel About 0.15% C, Annealed

  • Carbon content: up to 0.2%
  • Hardness: up to 125 HB

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VDI3323 Groups #2 and #3

Non-alloyed steel 0.2-0.5% Carbon

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VDI3323 Groups #4 and 5

Non-alloyed steel 0.55 – 0.95% Carbom

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VDI3323 Groups #6, 7, 8 and 9

Low-alloyed steel (Alloying elements up to 8%)

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VDI3323 Groups #10 and 11

Tool Steel and High-Alloy Steel

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VDI3323 Groups #12 and 13

Ferritic and Martensitic Stainless steel

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VDI3323 Group #14

Austenitic Stainless steel

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VDI3323 Groups #15 and 16

Gray Cast Iron

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VDI3323 Groups #17 and 18

Nodular Cast Iron

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VDI3323 Groups #19 and 20

Malleable Cast Iron

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VDI3323 Groups #21 & #23

Aluminum Alloys – Wrought, Not curable

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VDI3323 Groups #22 & #24

Aluminum Alloys – Wrought, Curable

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VDI3323 Group #25

Aluminum Lithium and Aluminum with Si>12%

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VDI3323 Groups #26 to 28

Copper Alloys

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VDI3323 Groups #29 and 30

Plastic Rubber and Wood

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  • Acrylics, Nylons
  • Carbon Fibre
  • Reinforced plastics
  • Glass fiber
  • Graphite
  • Hard rubber
  • Wood

VDI3323 Groups #31 and 32

Fe Based Supper Alloys

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VDI3323 Groups #33 and 34

Nickel or Cobalt Based Supper Alloys

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VDI3323 Group #35

Nickel or Cobalt Based Cast Supper Alloys

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VDI3323 Groups #36 and 37

Titanium Alloys

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VDI3323 Groups #38 to 40

Hardened Steel and Cast Iron

Any Steel or Cast Iron from Groups 1-11 and 15-20 belongs to these group when it is hardened above 350 HB (38 HRC)

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