Mitsubishi WNMG080412-MA MC7025 Carbide Turning Inserts for Stainless Steel (10pcs) - BEYOND

Mitsubishi WNMG080412-MA MC7025 Carbide Turning Inserts for Stainless Steel (10pcs)

$92.26 USD

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Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.

💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF

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Description

MITSUBISHI WNMG080412-MA MC7025

The Stainless Steel Machining Specialist | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080412-MA MC7025 is a premium, double-sided 80° trigon negative insert specifically engineered for Stainless Steel turning. Designed and manufactured in Japan, the MC7025 CVD coating utilizes advanced Al-Ti-Cr-N layers to combat the work-hardening and high-heat characteristics of austenitic stainless steels. Featuring a robust 1.2mm radius for increased edge strength and the versatile MA chipbreaker, this indexable carbide insert is the professional choice for medium roughing in CNC machining environments.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
08
IC 12.7mm
04
Thick 4.76mm
12
Radius 1.2mm
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080412-MA WNMG 433-MA
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 1.2 mm 0.047 inch

MC7025: The Stainless Steel Choice

The MC7025 grade is Mitsubishi's specialized CVD solution for Stainless Steel turning. Stainless steel often causes notch wear and built-up edge; however, MC7025 utilizes a smooth surface coating that prevents material adhesion. This grade is optimized for the M20-M30 range, providing superior resistance to the high thermal loads found in 304 and 316 stainless steel production runs.

MA Chipbreaker Geometry

The MA chipbreaker is an all-purpose medium-range geometry. It provides an excellent balance between sharp cutting action and edge toughness. For stainless steel, the MA geometry ensures efficient chip control, breaking the chips into manageable C-shapes even in materials known for being "gummy."

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 100 - 200 m/min (330 - 655 SFM)
  • Feed Rate (f): 0.20 - 0.50 mm/rev (0.008 - 0.020 ipr)
  • Depth of Cut (ap): 1.0 - 4.5 mm

*Note: Due to the 1.2mm radius, you can achieve higher feed rates than standard 0.4 or 0.8mm inserts.*

Compatible External Tool Holders:

Shop MWLNR / DWLNR Tool Holders

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Game Changer for 316 Stainless" - Mark T., USA
"The MC7025 grade lasts much longer than the previous brand we used. The 1.2mm radius is perfect for heavy medium cutting."

⭐⭐⭐⭐⭐ "Excellent Quality" - Hans L., Germany
"Original boxes, verified Japanese quality. No bird-nesting chips with the MA geometry."

⭐⭐⭐⭐ "Great Stability" - Sato K., Japan
"Reliable performance on long batches. The MC7025 resists heat deformation very well."

⭐⭐⭐⭐⭐ "Cost Effective" - Liam G., Australia
"6 edges per insert makes this trigon shape extremely efficient. Highly recommended for heavy stainless jobs."

⭐⭐⭐⭐⭐ "Fast Shipping" - Andrej B., Poland
"Best price for authentic Mitsubishi. Arrived in 3 days. Surface finish on our parts is impressive."

Technical Q&A

Q: Can I use MC7025 for Carbon Steel?

A: While it can cut steel, MC7025 is optimized for Stainless Steel. For Carbon Steel, we recommend the MC6025 grade for better tool life.

Q: Does this insert have 6 cutting edges?

A: Yes, as a negative trigon (W-shape) insert, it provides 3 edges per side, totaling 6 usable edges.

Q: What is the benefit of the 1.2mm radius?

A: A larger radius (12) provides a stronger cutting edge and allows for higher feed rates, which is ideal for roughing and medium-heavy machining.

Expert Performance Tip: Stainless Steel Efficiency

For Austenitic Stainless (304/316), always use MC7025. If you are experiencing excessive heat, ensure your coolant pressure is high to prevent the material from work-hardening.

Technical FAQ & Buying Guide

How do I choose the correct specification?

When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.

How can I check compatibility with my existing setup?

For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.

What quantity and price unit am I ordering?

Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.

How should I choose cutting parameters?

Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.

Are bulk discounts available?

Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.

When will my order ship and arrive?

According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.