Polski 
- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
SDMT 120408 milling insert – square for 45° face milling
| Technical data | |
|---|---|
| Shape | 90° square (S) |
| Side length l | 12 mm |
| Thickness s | 4.76 mm |
| Corner radius rε | 0.8 mm |
| ANSI code | SDMT 432 |
| Clearance angle | 15° (D) |
| Tolerance | class M |
| Design | hole + chip breaker (type T) |
| Grade | H6310 (PVD-coated carbide) |
| AESN code | manufacturer code; angle according to the product data sheet |
Cutting data for the indexable face milling insert
conservative ranges for a 45° milling head — ISO groups P and M
| Material | Vc [m/min] | fz [mm/tooth] | ap [mm] | ae [% D] |
|---|---|---|---|---|
| PSteel | 150-220 | 0.10-0.22 | 0.5-3.0 | 60-80 |
| MStainless steel | 80-140 | 0.08-0.18 | 0.3-2.0 | 50-70 |
H6310 square face milling insert – design and applications
single-sided AESN square for a 45° face mill, with a hole and chip breaker
The SDMT 120408 milling insert is a square indexable insert made of grade H6310 cemented carbide, designed for face mills. AESN is the manufacturer's geometry code; the cutter angle must not be inferred without the product data sheet. In the designation, S indicates a 90° square shape, D a 15° clearance angle, M a medium tolerance class, and T a mounting hole with a chip breaker on one side. Four symmetrical corners provide four cutting edges on one side of the insert. The corner radius rε 0.8 mm combines edge strength with a good machined surface finish. The increased clearance angle of 15° reduces friction between the flank and the workpiece material. The PVD coating, applied by physical vapor deposition, increases the cutting edge's abrasion resistance.
Key advantages of the H6310 cemented carbide insert
- Four cutting edges — the square shape provides 4 corners per side; when an edge becomes dull, index the insert in the cutter pocket without removing the cutter.
- Grade H6310 for ISO groups P and M — PVD-coated carbide for steel (P20-P40) and stainless steel (M20-M40).
- AESN code — compatibility with the cutter angle and the geometry characteristics must be confirmed in the product data sheet.
- The corner radius rε 0.8 mm increases corner strength and allows higher feed rates than smaller radii.
- The 15° clearance angle reduces friction between the insert flank and the workpiece material.
- The single-sided chip breaker guides and breaks chips when milling steel and stainless steel.
Applications and milling data selection
The SDMT 120408 insert is suitable for face milling structural steel housings and stainless steel components. Calculate the cutter speed using n = 1000·Vc/(π·D): for a cutter diameter of 63 mm at Vc = 180 m/min, the result is approximately 910 rpm. Calculate the table feed rate using vf = fz·z·n; with five inserts in the cutter and a feed per tooth fz of 0.15 mm, this gives approximately 683 mm/min. At κ=45°, the chip thickness is less than the feed per tooth, and the forces have a larger axial component.
The 45° entering angle promotes stable face milling but increases the axial force component, so ensure rigid workpiece clamping and a short overhang. For stainless steel, maintain a cutting speed of 80–140 m/min and a constant feed to limit work hardening of the layer being cut. Select the depth of cut within the table limits and evacuate chips with compressed air or coolant. Grade H6310 indexable inserts are supplied by the Korean brand Horn.
▲
Application limitation
Grade H6310 covers steels ISO P20-P40 and stainless steels ISO M20-M40. When face milling with a 45° cutter, monitor the axial force component; if workpiece clamping lacks rigidity, reduce the depth of cut and feed to prevent vibration.
Square insert designation decoder according to ISO 1832
how to read the SDMT 120408 AESN code — designation positions 1–10
Designation SDMT 120408 AESN according to the standard ISO 1832: 4 letters describe the geometry and construction, 2 numeric codes describe the dimensions, and the suffix AESN — the wiper edge geometry. Each field has a number, an icon and a brief description.
ISO 1832 designation decoder — how to read the code
1Sshape 2Dangle α 3Mtolerance 4Ttype – 512size 604thickness 708radius rε – 7Aangle κ 8Eland α′ 9Sedge 10Nhand
Positions 1–4 · ISO code
1SShape
Square 90°
4 corners of 90° per side
2DClearance angle
α = 15°
positive, single-sided
3MTolerance
Class M (intermediate)
IC ±0.08 · thickness ±0.13 mm
4TType
Countersunk hole + chip breaker
countersink 40–60°, single-sided chip breaker
Positions 5–7 · dimensions [mm]
512Size
l = 12 mm
IC = 12 mm (square: IC = l)
604Thickness
s = 4.76 mm
between rake faces
708Corner radius
rε = 0.8 mm
code ÷ 10 → radius in mm
AESN suffix · wiper edge
7AEntering angle
κ = 45°
45° angle milling cutters and milling heads
8EWiper land
α′ = 20°
wiper land clearance angle
9SEdge condition
Chamfered and rounded
S-land — strongest edge
10NHand
Right-hand and left-hand
symmetrical design
✓ 4 corners × 1 side = 4 cutting edges
Full designation: SDMT 120408 AESN = 90° square · 15° positive · class M · countersunk hole and chip breaker · IC 12 mm (l 12 mm) · s 4.76 mm · rε 0.8 mm · κ 45° · 20° wiper facet · chamfered and rounded edge · right-hand and left-hand (N)
Operating range and compatibility of the SDMT 120408 insert
materials and operations suitable for the insert for 45° face mills
Application range:
| Status | Applications and limitations |
|---|---|
| ✓ | Face milling heads with an entering angle of 45° |
| ✓ | Face milling and leveling large surfaces |
| ✓ | Structural and alloy steel — group ISO P20-P40 |
| ✓ | Austenitic stainless steel — group ISO M20-M40 |
| ✓ | Machining at a depth of cut ap in accordance with the conservative 45° table |
| ✗ | Milling a wall perpendicular to the floor with a shoulder milling cutter 90° |
| ✗ | Turning — this is a milling insert, not a turning insert |
Frequently asked questions about the SDMT 120408 insert
number of edges, cutter selection, and milling parameters
Four — a square has 4 corners, and the single-sided design (hole with chip breaker, type T) means that the insert cuts only with its top face. When a corner becomes dull, rotate the insert in the cutter pocket by 90° to the next edge, without removing the cutter.
Compatibility with a milling head with an entering angle of 45° must be confirmed in the product data sheet; the AESN code alone does not determine the angle. Select the specific model based on a pocket for an insert with a side length of 12 mm.
Grade H6310 is PVD-coated carbide for structural and alloy steels (ISO P20-P40) and stainless steel (ISO M20-M40). The sources do not specify an HRC hardness limit for this grade, so none should be assumed.
Calculate the feed rate per minute using vf = fz·z·n. For a cutter with a diameter of 63 mm with five inserts at Vc = 180 m/min the rotational speed is approximately 910 rpm, and at a feed per tooth fz of 0.15 mm this gives approximately 683 mm/min. For stainless steel, the conservative 45° table specifies 80–140 m/min.
Product accessories
Reviews
No customer reviews for the moment.
Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
Recommended for you
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.