General Information: | ||
---|---|---|
Material Group | P - Steel | |
Sub-Group | Tool Steel | |
Tensile Strength | 1100-1300 [N/mm^2] | |
Machinability | 50% |
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Machining Steel 40CMD8
Steel 40CMD8 is a Tool Steel (High-alloy steel) that has on top of the 0.4% of carbon an additional 3.6% of manganese, chromium, and molybdenum. (See details in the below table). Steel 40CMD8 has a machinability rating of 50%.
Steel 40CMD8 belongs to the "P series" of tool steels. They are classified as Plastic Mold Tool Steel and contain medium carbon content (around 0.4%) and chromium content of around 2%. Tool Steels in this series (P2-P20) have a machinability rating of 50-60%. They are realtivly easiy to machine due to the low carbon and chromium content comapred with other tool steels. They are used mainly for plastic molds, and components for plastic pressure dies. P series steels maintain good strength in high temperatures and can reach a hardness of up to 50 HRC after heat treatment.
You can find here a list of machinability Ratings for different Tool Steels.
Summery:
Equivalent International Designations for Steel 40CMD8
Standard | Name |
---|---|
wnr | 1.2311 |
din | 40CrMnMo7 |
uns | T51620 |
anfor | 40CMD8 |
Chemical Composition for Steel 40CMD8
Element | Amount |
---|---|
Chromium (Cr) | 1.75-2.15% |
Manganese (Mn) | 1.35-1.65% |
Carbon (C) | 0.35-0.45% |
Silicon (Si) | 0.2-0.4% |
Molybdenum (Mo) | 0.15-0.30% |
Cutting Speeds Recomendations for Steel 40CMD8
* Click on the speeds below for higher precision in specific conditions!
Application | Vc (m/min) | Vc (SFM) |
---|---|---|
Turning | 185-250 | 610-820 |
Milling | 115-155 | 380-510 |
Parting | 90-120 | 300-390 |
Grooving | 105-140 | 340-460 |
Drilling | 75-100 | 250-330 |
Important! The speed estimation is given for an ideal situation:
- Most suitable carbide grade
- Stable tool clamping
- Stable workpiece clamping
- Good quality raw material
- A short overhang of the cutting tool.
- Nominal hardness of the material.
- etc.
Click on the speeds in the above table to get better precision for specific parameters
Or use our Speed and Feed Calculator
Recommended Carbide Grades for Steel 40CMD8
* If you do nott understand the below table? Read This Explanation to make the most out of it!
Grade for Turning
Brand | Grade | ISO | Material | app | App | Coating | Apps Range | 05 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sandvik | GC1115 | P | P - Steel | T | Turning | PVD | P05 - P20 | P | P | P | P | |||||
Sandvik | GC4305 | P | P - Steel | T | Turning | CVD | P05 - P10 | P | P | |||||||
Sandvik | GC4415 (GC4315) | P | P - Steel | T | Turning | CVD | P10 - P15 | P | P | |||||||
Sandvik | GC4425 (GC4325) | P | P - Steel | T | Turning | CVD | P15 - P30 | P | P | P | P | |||||
Sandvik | GC1125 | P | P - Steel | T | Turning | PVD | P20 - P30 | P | P | P | ||||||
Sandvik | GC4335 | P | P - Steel | T | Turning | CVD | P30 - P40 | P | P | P | ||||||
Iscar | IC807 (IC907) | P | P - Steel | T | Turning | PVD | P05 - P25 | P | P | P | P | P | ||||
Iscar | IC8150 | P | P - Steel | T | Turning | CVD | P10 - P15 | P | P | |||||||
Iscar | IC8250 | P | P - Steel | T | Turning | CVD | P15 - P30 | P | P | P | P | |||||
Iscar | IC830 (IC328) | P | P - Steel | T | Turning | PVD | P25 - P45 | P | P | P | P | P | ||||
Kennametal | KCP05B (KCP05) | P | P - Steel | T | Turning | CVD | P05 - P10 | P | P | |||||||
Kennametal | KCP10B (KCP10) | P | P - Steel | T | Turning | CVD | P10 - P20 | P | P | P | ||||||
Kennametal | KCU10 (KC5010) | P | P - Steel | T | Turning | PVD | P10 - P20 | P | P | P | ||||||
Kennametal | KCU25 (KC5025) | P | P - Steel | T | Turning | PVD | P20 - P30 | P | P | P | ||||||
Kennametal | KCP25B (KCP25) | P | P - Steel | T | Turning | CVD | P20 - P30 | P | P | P | ||||||
Kennametal | KCP30 | P | P - Steel | T | Turning | CVD | P30 - P40 | P | P | P | ||||||
Kennametal | KCP40B (KCP40) | P | P - Steel | T | Turning | CVD | P35 - P45 | P | P | P | ||||||
Walter | WPP10S (WPP10) | P | P - Steel | T | Turning | CVD | P05 - P20 | P | P | P | P | |||||
Walter | WPP05S (WPP05) | P | P - Steel | T | Turning | CVD | P05 - P15 | P | P | P | ||||||
Walter | WPP20S (WPP20) | P | P - Steel | T | Turning | CVD | P10 - P30 | P | P | P | P | P | ||||
Walter | WPP30S (WPP30) | P | P - Steel | T | Turning | CVD | P20 - P40 | P | P | P | P | P | ||||
Seco | TH1500 | P | P - Steel | T | Turning | CVD | P05 - P05 | P | ||||||||
Seco | TP0501 | P | P - Steel | T | Turning | CVD | P05 - P20 | P | P | P | P | |||||
Seco | TP1501 | P | P - Steel | T | Turning | CVD | P10 - P25 | P | P | P | P | |||||
Seco | TP2501 | P | P - Steel | T | Turning | CVD | P15 - P35 | P | P | P | P | P | ||||
Seco | CP500 | P | P - Steel | T | Turning | PVD | P15 - P40 | P | P | P | P | P | P | |||
Seco | CP600 | P | P - Steel | T | Turning | PVD | P25 - P45 | P | P | P | P | P | ||||
Seco | TP3501 | P | P - Steel | T | Turning | CVD | P30 - P40 | P | P | P | ||||||
Tungaloy | T9205 (T9105) | P | P - Steel | T | Turning | CVD | P05 - P10 | P | P | |||||||
Tungaloy | T9215 (T9115) | P | P - Steel | T | Turning | CVD | P10 - P20 | P | P | P | ||||||
Tungaloy | AH725 | P | P - Steel | T | Turning | PVD | P15 - P30 | P | P | P | P | |||||
Tungaloy | T9225 (T9125) | P | P - Steel | T | Turning | CVD | P15 - P25 | P | P | P | ||||||
Tungaloy | T9235 (T9135) | P | P - Steel | T | Turning | CVD | P30 - P40 | P | P | P | ||||||
Mitsubishi | UE6105 | P | P - Steel | T | Turning | CVD | P05 - P15 | P | P | P | ||||||
Mitsubishi | MC6015 (UE6010) | P | P - Steel | T | Turning | CVD | P10 - P20 | P | P | P | ||||||
Mitsubishi | VP15TF | P | P - Steel | T | Turning | PVD | P10 - P30 | P | P | P | P | P | ||||
Mitsubishi | MC6025 (UE6020) | P | P - Steel | T | Turning | CVD | P15 - P30 | P | P | P | P | |||||
Mitsubishi | MC6035 (UE6035) | P | P - Steel | T | Turning | CVD | P25 - P40 | P | P | P | P | |||||
Sumitomo | AC8015P (AC810P) | P | P - Steel | T | Turning | CVD | P05 - P15 | P | P | P | ||||||
Sumitomo | AC8020P | P | P - Steel | T | Turning | CVD | P10 - P25 | P | P | P | P | |||||
Sumitomo | AC1030U | P | P - Steel | T | Turning | PVD | P10 - P30 | P | P | P | P | P | ||||
Sumitomo | AC8025P (AC820P) | P | P - Steel | T | Turning | CVD | P15 - P30 | P | P | P | P | |||||
Sumitomo | AC8035P (AC830P) | P | P - Steel | T | Turning | CVD | P25 - P45 | P | P | P | P | P |
Grade for Parting Off
Brand | Grade | ISO | Material | app | App | Coating | Apps Range | 05 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sandvik | GC1125 | P | P - Steel | P | Parting | PVD | P05 - P20 | P | P | P | P | |||||
Sandvik | GC1135 | P | P - Steel | P | Parting | PVD | P15 - P35 | P | P | P | P | P | ||||
Iscar | IC808 (IC908) | P | P - Steel | P | Parting | PVD | P05 - P30 | P | P | P | P | P | P | |||
Iscar | IC830 (IC328) | P | P - Steel | P | Parting | PVD | P20 - P40 | P | P | P | P | P | ||||
Kennametal | KCU10 | P | P - Steel | P | Parting | PVD | P05 - P20 | P | P | P | P | |||||
Kennametal | KCU25 | P | P - Steel | P | Parting | PVD | P20 - P30 | P | P | P | ||||||
Walter | WKP13S | P | P - Steel | P | Parting | CVD | P05 - P20 | P | P | P | P | |||||
Walter | WSM23S | P | P - Steel | P | Parting | PVD | P10 - P30 | P | P | P | P | P | ||||
Walter | WSM33S (WSM33) | P | P - Steel | P | Parting | PVD | P20 - P40 | P | P | P | P | P | ||||
Walter | WSM43S | P | P - Steel | P | Parting | PVD | P30 - P45 | P | P | P | P | |||||
Seco | TGP45 | P | P - Steel | P | Parting | CVD | P10 - P45 | P | P | P | P | P | P | P | P | |
Seco | CP500 | P | P - Steel | P | Parting | PVD | P20 - P45 | P | P | P | P | P | P | |||
Seco | T350M | P | P - Steel | P | Parting | CVD | P25 - P45 | P | P | P | P | P | ||||
Seco | CP600 | P | P - Steel | P | Parting | PVD | P30 - P50 | P | P | P | P | |||||
Tungaloy | AH725 | P | P - Steel | P | Parting | PVD | P15 - P30 | P | P | P | P | |||||
Tungaloy | AH7025 | P | P - Steel | P | Parting | PVD | P20 - P30 | P | P | P | ||||||
Tungaloy | GH130 | P | P - Steel | P | Parting | PVD | P25 - P40 | P | P | P | P | |||||
Mitsubishi | VP10RT | P | P - Steel | P | Parting | PVD | P05 - P10 | P | P | |||||||
Mitsubishi | VP20RT | P | P - Steel | P | Parting | PVD | P10 - P30 | P | P | P | P | P | ||||
Mitsubishi | VP30RT | P | P - Steel | P | Parting | PVD | P20 - P40 | P | P | P | P | P | ||||
Sumitomo | AC1030U (AC530U) | P | P - Steel | P | Parting | PVD | P10 - P25 | P | P | P | P | |||||
Sumitomo | AC520U | P | P - Steel | P | Parting | PVD | P15 - P30 | P | P | P | P | |||||
Sumitomo | AC830P | P | P - Steel | P | Parting | CVD | P20 - P40 | P | P | P | P | P |
Grade for Grooving
Brand | Grade | ISO | Material | app | App | Coating | Apps Range | 05 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sandvik | GC1125 | P | P - Steel | G | Grooving | PVD | P05 - P35 | P | P | P | P | P | P | P | ||
Iscar | IC807 (IC907) | P | P - Steel | G | Grooving | PVD | P05 - P10 | P | P | |||||||
Iscar | IC808 (IC908) | P | P - Steel | G | Grooving | PVD | P10 - P25 | P | P | P | P | |||||
Iscar | IC830 (IC328) | P | P - Steel | G | Grooving | PVD | P20 - P40 | P | P | P | P | P | ||||
Kennametal | KCU10 | P | P - Steel | G | Grooving | PVD | P10 - P20 | P | P | P | ||||||
Kennametal | KC5010 | P | P - Steel | G | Grooving | PVD | P10 - P20 | P | P | P | ||||||
Kennametal | KC5025 | P | P - Steel | G | Grooving | PVD | P20 - P30 | P | P | P | ||||||
Kennametal | KCU25 | P | P - Steel | G | Grooving | PVD | P20 - P30 | P | P | P | ||||||
Walter | WKP13S | P | P - Steel | G | Grooving | CVD | P05 - P20 | P | P | P | P | |||||
Walter | WSM23S | P | P - Steel | G | Grooving | PVD | P10 - P30 | P | P | P | P | P | ||||
Walter | WSM33S (WSM33) | P | P - Steel | G | Grooving | PVD | P20 - P40 | P | P | P | P | P | ||||
Walter | WSM43S | P | P - Steel | G | Grooving | PVD | P30 - P45 | P | P | P | P | |||||
Seco | CP500 | P | P - Steel | G | Grooving | PVD | P10 - P25 | P | P | P | P | |||||
Seco | CP600 | P | P - Steel | G | Grooving | PVD | P20 - P40 | P | P | P | P | P | ||||
Tungaloy | AH725 | P | P - Steel | G | Grooving | PVD | P15 - P30 | P | P | P | P | |||||
Tungaloy | T9225 (T9125) | P | P - Steel | G | Grooving | CVD | P15 - P25 | P | P | P | ||||||
Tungaloy | AH7025 | P | P - Steel | G | Grooving | PVD | P20 - P30 | P | P | P | ||||||
Tungaloy | GH130 | P | P - Steel | G | Grooving | PVD | P25 - P40 | P | P | P | P | |||||
Mitsubishi | VP10RT | P | P - Steel | G | Grooving | PVD | P05 - P10 | P | P | |||||||
Mitsubishi | VP20RT | P | P - Steel | G | Grooving | PVD | P10 - P25 | P | P | P | P | |||||
Mitsubishi | MY5015 | P | P - Steel | G | Grooving | CVD | P10 - P20 | P | P | P | ||||||
Mitsubishi | VP30RT | P | P - Steel | G | Grooving | PVD | P20 - P40 | P | P | P | P | P | ||||
Sumitomo | AC1030U (AC530U) | P | P - Steel | G | Grooving | PVD | P10 - P25 | P | P | P | P | |||||
Sumitomo | AC520U | P | P - Steel | G | Grooving | PVD | P15 - P30 | P | P | P | P | |||||
Sumitomo | AC830P | P | P - Steel | G | Grooving | CVD | P20 - P40 | P | P | P | P | P |
Grade for Milling (Indexable)
Brand | Grade | ISO | Material | app | App | Coating | Apps Range | 05 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sandvik | GC4330 | P | P - Steel | M | Milling | CVD | P10 - P25 | P | P | P | P | |||||
Sandvik | GC4340 | P | P - Steel | M | Milling | CVD | P25 - P40 | P | P | P | P | |||||
Iscar | IC808 (IC908) | P | P - Steel | M | Milling | PVD | P05 - P15 | P | P | P | ||||||
Iscar | IC830 (IC928) | P | P - Steel | M | Milling | PVD | P10 - P40 | P | P | P | P | P | P | P | ||
Kennametal | KC510M | P | P - Steel | M | Milling | PVD | P05 - P10 | P | P | |||||||
Kennametal | KC522M | P | P - Steel | M | Milling | PVD | P10 - P25 | P | P | P | P | |||||
Kennametal | KCPK30 | P | P - Steel | M | Milling | CVD | P25 - P40 | P | P | P | P | |||||
Kennametal | KC725M | P | P - Steel | M | Milling | PVD | P30 - P40 | P | P | P | ||||||
Walter | WKP25S (WKP25) | P | P - Steel | M | Milling | CVD | P15 - P35 | P | P | P | P | P | ||||
Walter | WKP35G | P | P - Steel | M | Milling | CVD | P25 - P45 | P | P | P | P | P | ||||
Walter | WSP45S (WSP45S) | P | P - Steel | M | Milling | PVD | P35 - P45 | P | P | P | ||||||
Walter | WSM45X | P | P - Steel | M | Milling | CVD | P35 - P45 | P | P | P | ||||||
Seco | MP1501 | P | P - Steel | M | Milling | CVD | P05 - P20 | P | P | P | P | |||||
Seco | F40M | P | P - Steel | M | Milling | PVD | P05 - P50 | P | P | P | P | P | P | P | P | P |
Seco | MP2501 | P | P - Steel | M | Milling | CVD | P15 - P45 | P | P | P | P | P | P | P | ||
Tungaloy | AH725 | P | P - Steel | M | Milling | PVD | P15 - P30 | P | P | P | P | |||||
Tungaloy | AH120 | P | P - Steel | M | Milling | PVD | P15 - P25 | P | P | P | ||||||
Tungaloy | AH3225 | P | P - Steel | M | Milling | PVD | P20 - P35 | P | P | P | P | |||||
Tungaloy | T3225 | P | P - Steel | M | Milling | CVD | P20 - P35 | P | P | P | P | |||||
Tungaloy | AH130 | P | P - Steel | M | Milling | PVD | P25 - P40 | P | P | P | P | |||||
Tungaloy | AH3135 | P | P - Steel | M | Milling | PVD | P30 - P40 | P | P | P | ||||||
Mitsubishi | MP6120 | P | P - Steel | M | Milling | PVD | P10 - P30 | P | P | P | P | P | ||||
Mitsubishi | MP6130 | P | P - Steel | M | Milling | PVD | P20 - P40 | P | P | P | P | P | ||||
Mitsubishi | VP30RT | P | P - Steel | M | Milling | PVD | P25 - P45 | P | P | P | P | P | ||||
Sumitomo | XCU2500 | P | P - Steel | M | Milling | CVD | P05 - P30 | P | P | P | P | P | P | |||
Sumitomo | ACP2000 | P | P - Steel | M | Milling | CVD | P05 - P25 | P | P | P | P | P | ||||
Sumitomo | ACU2500 | P | P - Steel | M | Milling | PVD | P10 - P40 | P | P | P | P | P | P | P | ||
Sumitomo | ACP3000 | P | P - Steel | M | Milling | PVD | P20 - P45 | P | P | P | P | P | P |
Recommended Insert Cutting Edge Geometry for Steel 40CMD8
Honing Size: | 0.05-0.08 mm / 0.002-0.003" | |
Rake Angle: | 11° -13° | |
Land Angle: | Positive | |
Land Width: | 0.20-0.30 mm / 0.008-0.012" |
Learn more about carbide inserts Cutting-Edge Geometry Parameters.