Page 354 - YG 2019

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T7505/T6505/
SERIES TH505 T7546/T8546
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CARBIDE
DESCRIPTION USCTI 311 USCTI 311

PAGE 516 517 Being the best through innovation
HIGH PERFORMANCE TAPS THREADS NPT NPTF
RECOMMENDATION TABLE TAP MATERIALS HSS HSS

Super HSS : Premium HSS Metallurgy CHAMFER LENGTH 2-3P 2-3P
P-HSS : Powdered Metallurgy Bright
HSSE-V3 : 3% Vanadium Alloy HSS-EX SURFACE TREATMENT Steam Oxide Bright
TiN
TiCN
HSS-V : Vanadium Alloy HSS
SPIRAL FLUTE ANGLE - -
THREAD DEPTH 2.0D 2.0D
◎= RECOMMENDED
○= SUITABLE HOLE TYPE Blind Blind
Through Through
COOLANT
A = Cutting Oil Cutting Speed
T = Oil Emulsion (SFM)
X = Cutting Oil/Oil Emulsion
Hardness Hardness
(HRc) (BHN) COOLANT
Material Material Sub-Group ISO
Group Uncoated Coated

Low carbon steels < 15 < 180 25 - 50 50 - 80 T
Free machining carbon steels P ○ ○
Medium to high carbon steels < 23 < 240 25 - 50 50 - 80 T
Low alloyed steels P ○ ○
Steel
Steel castings & forgings > 24 > 250
Heat-treatable alloy steels P ≤ 38 ≤ 350 6 - 30 10 - 35 X
Alloyed tool steels P > 38 > 350 6 - 12 - A
Mold steels ≤ 44 ≤ 420
Free machining stainless steels M < 23 < 240 12 - 35 20 - 50 A
Stainless Heat-and corrosion-resistant stainless steels M > 24 > 250 12 - 15 12 - 15 A
Steel Valve stainless steels ≤ 38 ≤ 350
Stainless steel castings > 38 > 350 12 - 15 - A
Precipitation hardening stainless steels M ≤ 44 ≤ 420
Grey cast iron K - ≤ 220 35 - 50 50 - 65 T ○ ○
Cast Iron Nodular cast iron / Chilled cast iron
Meehanite iron / Ductile iron K - ≥ 250 12 - 45 25 - 55 X
Copper Pure and alloyed copper N - - 50 - 60 65 - 100 T
Free machining brass SOLID CARBIDE
Brass N - - 30 - 65 - T
Alloyed brass
Bronze N 44 < 420 12 - 20 35 - 80 T
Pure Aluminum N - - 50 - 65 - T ○ ○
Aluminum Aluminum alloys
Aluminum alloy castings N - - 40 - 65 45 - 90 T ○ ○ THREAD MILL
Zinc N - - 25 - 65 50 - 80 T
Magnesium N - - - 45 - 100 T
718 & 625 INCOn / Waspaloy
Hastelloyn / Invar S ≤ 38 ≤ 350 10 - 15 - A
Nickel Moneln / Incoloy
Alloys
718 Inconel > 38 > 350
A286 S ≤ 44 ≤ 420 10 - 12 - A
Titanium S ≤ 38 ≤ 350 3 - 15 - A
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