Page 139 - Threading_Handbook

Tool Material

• Which cutting tool grade is
Grade
most suitable for threading?

Selecting a grade is strongly connected with the cutting geometry of a tool and other THREAD TURNING
factors. The following tables show the correct choice: they visualize a grade position in
the field of application in accordance with standard ISO 513 and characterize the grade
properties compared with other grades.
The tables provide summary data about grade application in coordinates of classification
numbers from standard ISO 513 and availability of each grade per threading family.

There are main and complementary grades. The main grades are more popular in machining
a considered class of engineering materials, but in specific cases the complementary grades
can be effective as well. In situations when a product produced from a main grade is not
available, a complementary grade provides an acceptable alternative.

Material
Hardened
Steel Stainless Steel Cast Iron Nonferrous High Temp. Allows
Steel
Material Field
IC28 P25 - P50 (2) M30 - M40 (2) K20 - K50 N10 - N30 S20 - S25
M30 - M40
P30 - P50
Tough IC228 P25 - P45 M30 - M40 S15 - S30
S25 - S30
N20 - N40
IC528
IC928
P20 - P50
IC50M P20 - P30
IC250 P15 - P35 (2) M20 - M40
Grade IC508 P20 - P40 M10 - M30 K20 - K30 N10 - N25 (1) S10 - S30 H10 - H20
IC08
M20 - M30
S10 - S40
N10 - N30
IC808 P15 - P30 (1) M20 - M30 K20 - K30 (2) S10 - S25 (2) H20 - H30 (2)
IC908 P15 - P30 (1) M20 - M30 (2) K20 - K30 (2) S10 - S25 (2) H20 - H30 (2)
Hard IC806 S15 - S25 (1)

IC1007 P10 - P30 (2) M05 - M20 (1) K20 - K40 (1) S05 - S20 (2) H05 - H15 (1)
IC1008 P20 - P50 M20 - M40 K15 - K40 N05 - N25 S15 - S25 H20 - H30
(1) Recommended; Suitable
(2)

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