4 Flute HRC70 Solid Carbide Flat End Mill for Stainless Steel

Product Overview

This 4-flute HRC70 solid carbide end mill is designed for milling stainless steel and other difficult-to-machine austenitic materials. The ultra-fine grain carbide substrate is finished with a multi-layer coating that resists heat and abrasion, keeping the cutting edge sharp through long production runs. Ground peripheries and a controlled core diameter give stable, chatter-free cutting in side milling, slotting, profiling and finishing. The size chart below lists cutting diameter, depth of cut, shank diameter and overall length for every standard size; non-standard lengths and coatings can be made to order.

Specifications

Grade	HRC45	HRC55	HRC65	HRC68
Materials	DU20	MH12S	ZK40SF	GU25UF
Details	Grain size: 0.8um Co: 8% Flexural strength: 38000N/mm2	Grain size: 0.6um Co:10% Flexural strength: 4100N/mm2	Grain size: 0.5um Co: 12% Flexural strength 4300N/mm2	Grain size: 0.4um Co:12% Flexural strength: 4300N/mm2

Item	Color	Hardness(HV)	Thickness(UM)	Oxidation Temp.(°C)	Friction Coeffient
AlTiN	Black	3300	2.5-3	900	0.3
TiAlN	Viloet	2800	2.5-3	900	0.3
TiSiN	Bronze	3600	3	1000	0.45
AlTiSiN	Blue	4000	4	1200	0.4
TiN	Gold	2500	2.5-3	600	0.4

Model	DC(cm)	APMX(cm)	DON(cm)	LF(cm)
Ф1*3*4*50L	1	3	4	50
Ф1.5*4*4*50L	1.5	4	4	50
Ф2*6*4*50L	2	6	4	50
Ф2.5*8*4*50L	2.5	8	4	50
Ф3*9*3*50L	3	9	3	50
Ф3*9*4*50L	3	9	4	50
Ф3.5*11*4*50L	3.5	11	4	50
Ф4*12*4*50L	4	12	4	50
Ф5*13*5*50L	5	13	5	50
Ф5*13*6*50L	5	13	6	50
Ф6*15*6*50L	6	15	6	50
Ф8*20*8*60L	8	20	8	60
Ф8*24*8*60L	8	24	8	60
Ф3*12*3*75L	3	12	3	75
Ф4*16*4*75L	4	16	4	75
Ф6*24*6*75L	6	24	6	75
Ф8*25*8*75L	8	25	8	75
Ф10*25*10*75L	10	25	10	75
Ф12*30*12*75L	12	30	12	75
Ф3*12*3*100L	3	12	3	100
Ф4*20*4*100L	4	20	4	100
Ф6*30*6*100L	6	30	6	100
Ф8*35*8*100L	8	35	8	100
Ф10*40*10*100L	10	40	10	100
Ф12*45*12*100L	12	45	12	100
Ф14*45*14*100L	14	45	14	100
Ф16*45*16*100L	16	45	16	100
Ф18*45*18*100L	18	45	18	100
Ф20*45*20*100L	20	45	20	100
Ф6*45*6*150L	6	45	6	150
Ф8*50*8*150L	8	50	8	150
Ф10*55*10*150L	10	55	10	150
Ф12*55*12*150L	12	55	12	150
Ф14*70*14*150L	14	70	14	150
Ф16*70*16*150L	16	70	16	150
Ф20*70*20*150L	20	70	20	150

Applications

• High-feed roughing of stainless steel parts
• Dynamic milling with light radial engagement
• Finishing of flanges, pump and valve bodies
• Chatter-free milling on less rigid setups

Features

• Ultra-fine grain carbide substrate for high transverse rupture strength
• Multi-layer coating with high hot hardness and oxidation resistance
• Ground periphery and sharp cutting edge for dimensional accuracy
• Polished flute surface reduces built-up edge and improves chip flow
• Full size range with reduced-neck options for deep-reach milling

Ordering & Support

Minimum order quantity is 10 pieces, and standard sizes ship in 5–8 working days. We can supply inserts with your own laser marking, selected coating and neutral packaging, and we are glad to send samples for cutting trials on your material before you commit to a batch. Send us your workpiece material, machine and cutting parameters and our engineers will recommend the most suitable grade and geometry.