Page 497 - Icon Ridge Industrial Tools Catalog

Lathe tools \ Technical introduction–turning - ISO turning

Selection of cemented carbide grade

When selecting the cemented carbide grade, the following basic substrates The various basic substrates can produce very hard qualities or a high level of
are available to the user. A distinction is made between the following basic toughness depending on the composition.
substrates in terms of hardness and wear resistance: ƒ Very hard substrates are identified by a low numeral P10
ƒ Very tough substrates are identified by a high numeral P30

K N HC 7610
P 05–15
S HC 7620
P 15–25
HC 7630
P P 30–35

M

1 1
2 2
① Hardness ② Toughness ① Hardness / wear resistance / cutting speed
② Toughness / breaking strength
As illustrated in the diagram, hard substrates can only be used under favourable
Good cutting conditions cutting conditions. These substrates are very hard and wear-resistant but will
break under difficult cutting conditions. In the case of unfavourable cutting
Average cutting conditions conditions, we use very tough substrates that are highly impact-resistant but less
wear-resistant.
Unfavourable cutting conditions

Cemented carbide key

*HC 7620 ① H = Cemented carbide
② C = Coated / W = uncoated
③ 7 = Generation of cemented carbide quality
④ ISO group 6 = P / 5 = M / 4 = K / 3 = N / 2 = S
⑤ Depending on the ISO group P10 / P20 / P30
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ACP 25 T-6 ① Brand: A = ATORN / O = ORION
② C = Cemented carbide CVD coated
P = Cemented carbide PVD coated
W = Uncoated
K = Ceramic / B = CBN / A = PKD
1 2 3 4 5 6 ③ ISO group 6 = P / 5 = M / 4 = K / 3 = N / 2 = S
U = General processing
④ Code for the respective ISO group: P25
⑤ Processing type: T = Turning
⑥ Additional letter: Generation or additive for coating
*note: ORION cemented carbide grades follow the same pattern, with the difference that an O is placed in front, e.g. OHC 7625

cemented carbide key WIDIA declaration

WP15CT

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Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com 497
Availability subject to country specific rules and regulations.