Page 353 - YG 2019

GS GS GS GS GS GS VA GG GG GG GS

STI TAP S1/S2 T7L36/T6L36
SERIES T7425 (ST/SI) T7436 T7415 T7426 T7405 Q1/Q0/Q6 Q9/R0/R1 R7/R8/R9/S0 (INTERRUPTED) T7536/T6536

DESCRIPTION USCTI 322A USCTI 322 USCTI 322 USCTI 322A USCTI 322 USCTI 322A USCTI 311 USCTI 311 USCTI 311 USCTI 311 USCTI 311

PAGE 503 504 505 506 507 508 511 512 513 514 515
HIGH PERFORMANCE TAPS THREADS M/MF UNC/UNF UNC/UNF M/MF UNC/UNF M/MF NPTF NPTF NPTF NPTF NPS/NPSF

RECOMMENDATION TABLE TAP MATERIALS HSS HSSE-V3 HSS HSS HSS HSS HSSE-V3 HSSE-V3 HSSE-V3 HSSE-V3 HSS
4-5P 4-5P
Super HSS : Premium HSS Metallurgy CHAMFER LENGTH 1.5-2P 4-5P 4-5P 4-5P 2-3P 2-3P 2-3P 2-3P 4-5P
1.5-2P 1.5-2P
P-HSS : Powdered Metallurgy Bright
Bright Bright
Bright
TiN
HSSE-V3 : 3% Vanadium Alloy HSS-EX SURFACE TREATMENT Bright Hardslick Bright Bright Bright Bright Steam Oxide TiN Hardslick Bright Steam Oxide
TiCN
HSS-V : Vanadium Alloy HSS Hardslick Hardslick Nitrided-Steam Oxide
SPIRAL FLUTE ANGLE R50° - - - - - R15° R15° - - -
THREAD DEPTH 2.5D 3.0D 3.0D 3.0D 2.0D 2.0D 2.5D 2.5D 2.0D 2.0D 2.0D
◎= RECOMMENDED
○= SUITABLE HOLE TYPE Blind Through Through Through Blind Blind Blind Blind Blind Blind Blind
Through Through Through Through Through Through
COOLANT
A = Cutting Oil Cutting Speed
T = Oil Emulsion (SFM)
X = Cutting Oil/Oil Emulsion
Hardness Hardness COOLANT
(HRc) (BHN)
Material Material Sub-Group
Group ISO Uncoated Coated

Low carbon steels
Free machining carbon steels P < 15 < 180 25 - 50 50 - 80 T ○ ◎ ○ ○ ○ ○ ○ ◎ ◎ ◎ ○
Medium to high carbon steels
Low alloyed steels P < 23 < 240 25 - 50 50 - 80 T ○ ◎ ○ ○ ○ ○ ◎ ◎ ◎ ◎ ○
Steel
Steel castings & forgings > 24 > 250 6 - 30 10 - 35 X
Heat-treatable alloy steels P ≤ 38 ≤ 350 ○ ○ ○ ○ ○
Alloyed tool steels > 38 > 350 6 - 12 - A
Mold steels P ≤ 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
Brass Alloyed brass N - - 30 - 65 - T
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 ○ ○ ○ ○ ○ ○ ○ ○
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 10 - 12 - A
A286 S ≤ 44 ≤ 420
Titanium S ≤ 38 ≤ 350 3 - 15 - A
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