Page 448 - THREADING CATALOG

GRADES AND MATERIALS
Material Groups

According to DIN / ISO 513 and VDI 3323
Material
Tensile Strength Hardness Group
ISO Material Condition [N/mm ] Kc1 [N/mm ] mc (2) HB No.
2
(1)
2
<0.25% C annealed 420 1350 0.21 125 1
≥0.25% C annealed 650 1525 0.22 190 2
non-alloy steel and cast
steel, free cutting steel <0.55% C quenched and tempered 850 1675 0.24 250 3
annealed
750
4
1675
220
0.24
≥0.55% C
quenched and tempered 1000 1900 0.24 300 5
annealed 600 1775 0.24 200 6
P low alloy and cast steel 930 1675 0.24 275 7
(less than 5% of alloying elements) quenched and tempered 1000 1725 0.24 300 8
1200 1800 0.24 350 9
annealed 680 2450 0.23 200 10
high alloyed steel, cast steel and tool steel
quenched and tempered 1100 2500 0.23 325 11
ferritic / martensitic 680 1875 0.21 200 12
stainless steel and cast steel
martensitic 820 1875 0.21 240 13
M stainless steel and cast steel austenitic, duplex 600 2150 0.20 180 14
ferritic / pearlitic 1150 0.20 180 15
gray cast iron (GG)
pearlitic / martensitic 1350 0.28 260 16
ferritic 1225 0.25 160 17
K nodular cast iron (GGG)
pearlitic 1350 0.28 250 18
ferritic 1225 0.25 130 19
malleable cast iron
pearlitic 1420 0.3 230 20
not hardenable 700 0.25 60 21
aluminum-wrought alloys
hardenable 800 0.25 100 22
not hardenable 700 0.25 75 23
≤12% Si
aluminum-cast alloys hardenable 700 0.28 90 24
>12% Si high temperature 750 0.25 130 25
N
>1% Pb free cutting 700 0.27 110 26
copper alloys brass 700 0.27 90 27
electrolytic copper 700 0.27 100 28
duroplastics, fiber plastics 200 0.20 70 Shore D 29
non metallic
hard rubber 200 0.20 55 Shore D 30
annealed 2600 0.24 200 31
Fe based
hardened 3100 0.24 280 32
high temperature alloys annealed 3300 0.24 250 33
S Ni or Co hardened 3300 0.24 350 34
based
cast 3300 0.24 320 35
pure 400 1160 0.24 190 36
titanium alloys
alpha+beta alloys, hardened 1050 1245 0.24 310 37
hardened 4600 0.25 55 HRC 38
hardened steel
H hardened 4700 0.25 60 HRC 39
chilled cast iron cast 4600 0.27 400 40
cast iron hardened 4500 0.27 55 HRC 41
steel
stainless steel
cast iron
non-ferrous metals
superalloys and titanium
hard materials
(1) Specific cutting force for 1 mm 2 chip section.
(2) Chip thickness factor.

ISCAR
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