16ER 0.75 ISO T250 External Threading Insert Premium Grade

16ER 0.75 ISO T250 External Threading Insert Premium Grade
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Our Price:  £3.60
List Price:  £5.40
Saving Of:  £1.80 (33%)
(Exc. 20% VAT)(£4.32 Inc. VAT)

Model:  16ER0.75ISOT250
Brand:  APT Threading

Shipped Weight:  7 g

Availability:  

Only 28 left in stock - order soon  

Only 28 left in stock - order soon

APT Threading

Threading Inserts Fully Ground with High Quality PVD Coatings, Quality Machine Taps and Thread Milling Cutters


16ER 0.75 ISO T250, 0.75mm pitch full form ISO metric external threading Insert in grade T250.

Grade T250 is micro-grain carbide and is our preimium grade for all types of steel including carbon, alloy and hardened steel also good for cast iron and stainless good choice for general use.

Micrograin carbide provides increased wear resistance and improved tool life.

This bronze colour PVD coated grade covers P25, M25, K30, S15, H10 range of materials.

General Cutting parameters
MaterialHardness HBCutting Speed VC: m/minNumber of PassesApplication Choice
Non alloyed steel 0-0.45℅ C125-17090-190 (140)4-7Good
Low alloyed steel180-35070-140 (100)4-7Good
High alloyed steel200-32550-120 (90)4-7Good
Corrosion resistant steel20060-130 (100)4-7Good
Stainless - Ferritic200-33060-130 (100)4-7OK but try grade T350
Stainless - Austenitic180-20040-140 (90)4-7OK but try grade T350
Stainless - Cast Ferritic200-33060-120 (90)4-7OK but try grade T350
Stainless - Cast Austenitic200-33060-110 (80)4-7OK but try grade T350
Grey cast iron180-26060-130 (100)4-7OK
Spheroidal cast iron160-26090-160 (120)4-7OK
Malleable / Tempered iron130-23060-100 (70)4-7OK
Aluminium Wrought Alloys60-10080-370 (220)4-7OK but try grade AK10
Aluminium Castings Si<12%80-90200-360 (280)4-7OK but try grade AK10
Aluminium Alloys Si 12%-23%13060-180 (120)4-7OK but try grade AK10
Bronze & Brass90-10080-250 (170)4-7OK but try grade AK10
Iron Based Hi-temp Alloys 200-280 HB200-28030-60 (45)4-7OK but try grade T350
Nickel or Cobalt Based 250 HB25020-30 (25)4-7OK but try grade T350
Nickel or Cobalt Based 30-58 HRC35015-25 (20)4-7OK but try grade T350
Pure Titanium400Rm140-170 (150)4-7OK but try grade T350
Titanium  Alpha + Beta Alloys1050Rm50-70 (60)4-7OK but try grade T350
Hardened Steel40-50HRC45-60 (50)4-7OK
Hardened Steel50-55HRC40-50 (45)4-7OK

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