16ER 2.50 ISO T250 External Threading Insert Premium Grade

16ER 2.50 ISO T250 External Threading Insert Premium Grade
Zoom  Zoom
Our Price:  £3.60
List Price:  £5.40
Saving Of:  £1.80 (33%)
(Exc. 20% VAT)(£4.32 Inc. VAT)

Model:  16ER2.50ISOT250
Brand:  APT Threading

Shipped Weight:  7g

Availability:  

In stock, immediate despatch  

In stock, immediate despatch

APT Threading

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


16ER 2.50 ISO T250, 2.5mm 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)8-14Good
Low alloyed steel180-35070-140 (100)8-14Good
High alloyed steel200-32550-120 (90)8-14Good
Corrosion resistant steel20060-130 (100)8-14Good
Stainless - Ferritic200-33060-130 (100)8-14OK but try grade T350
Stainless - Austenitic180-20040-140 (90)8-14OK but try grade T350
Stainless - Cast Ferritic200-33060-120 (90)8-14OK but try grade T350
Stainless - Cast Austenitic200-33060-110 (80)8-14OK but try grade T350
Grey cast iron180-26060-130 (100)8-14OK
Spheroidal cast iron160-26090-160 (120)8-14OK
Malleable / Tempered iron130-23060-100 (70)8-14OK
Aluminium Wrought Alloys60-10080-370 (220)8-14OK but try grade AK10
Aluminium Castings Si<12%80-90200-360 (280)8-14OK but try grade AK10
Aluminium Alloys Si 12%-23%13060-180 (120)8-14OK but try grade AK10
Bronze & Brass90-10080-250 (170)8-14OK but try grade AK10
Iron Based Hi-temp Alloys 200-280 HB200-28030-60 (45)8-14OK but try grade T350
Nickel or Cobalt Based 250 HB25020-30 (25)8-14OK but try grade T350
Nickel or Cobalt Based 30-58 HRC35015-25 (20)8-14OK but try grade T350
Pure Titanium400Rm140-170 (150)8-14OK but try grade T350
Titanium  Alpha + Beta Alloys1050Rm50-70 (60)8-14OK but try grade T350
Hardened Steel40-50HRC45-60 (50)8-14OK
Hardened Steel50-55HRC40-50 (45)8-14OK

Continue ShoppingTell a Friend
Search: