Appearance Quality

Appearance quality assurance range

Turning surface ( Outer diameter )

5056 Aluminum Alloy

1045 Carbon Steel​

Notes

Turning surface ( Inner diameter )

5056 Aluminum Alloy​

304 Stainless Steel

Milling face

1045 Carbon Steel

304 Stainless Steel

Caution

Although cutter marks may remain, specification in relation to the marks is not supported.

Part Cut-off method

Machining

Wire Cutting

Caution

Processing method cannot be specified.

Wire-Cut EDM Surfaces

Wire-Cut EDM Surfaces

Enlarged view: Wire-cut EDM surface

Tip

Because this is a fusion process in which an electric discharge from an electrode melts the metal for cutting, it is not characterized by a shiny surface like cutting.

Surface Treatment Quality Standards

25540_10_usEN

Caution

  • Since film thickness management is difficult for small diameter precision holes, etc., additional machining may be carried out after processing, and as a result, the surface treatment may not remain on the cutting surface.
  • The surface treatment may not remain on the inside of holes as holes may be masked.
  • Surface treatment suspension and electrode contact marks may remain on the product.
  • To ensure contact points for the following target surface treatments, at least one of the hanging shapes listed in (1) to (5) above is required.
  • If there is no feature in the model for hanging the part, a through-hole will be made at any position for hanging.
Surface Treatment Hanging Holes
Electroless Nickel Plating
Hard Chrome Plating Target
Trivalent Chromate (clear) Target
Trivalent Chromate (black) Target
Black Oxide
Salt-Bath Nitrocarburizing
Low Temperature Black Chrome Target
Phosphate Coating
Clear Anodize Target
Black Anodize Target
Black Anodize (matte) Target
Hard Anodize (Clear) Target
Hard Chrome Plating Trivalent Chromate (clear) Trivalent Chromate (black) Low Temperature Black Chrome
Hard Chrome Plating Trivalent Chromate (clear) Trivalent Chromate (black) Low Temperature Black Chrome
Clear Anodize Black Anodize Black Anodize (matte)
Clear Anodize Black Anodize Black Anodize (matte)

Quenching Quality Standards

Appearance after quenching

After quenching

Blast finishing

Grinding finishing (outer diameter)

Grinding finishing (inner diameter)

Caution

  • Blasting is performed to remove surface contamination after quenching. There is no change in accuracy due to the treatment.
  • The photo shows sandblasting, but shot blasting is also available. Blast type cannot be specified.
  • If there are tolerances in the outer and inner diameters, grinding may be performed in the finishing process. In such cases, the appearance will change as shown in the above figure.
  • Grinding cannot be specified. Whether to carry out grinding will be determined at the factory from the perspective of accuracy assurance.
  • Since the threaded part is also hardened, there are cases where the threaded part may be damaged depending on the application. We currently do not accept specifications such as “only the threaded part cannot be hardened”.

Conditions of Use for Standard Materials (Polished bars and Cold finished material)

If the maximum diameter is applicable to the standard material, the factory will use the standard material at its own discretion, which may result in differences in appearance.

Machined

Cold finished material

Polished bar

Selection criteria for standard materials

Tolerance
IT6 g6 and h7 h9 Other (IT7 or above, general tolerance, etc.)
Surface roughness Ra6.3 Machined Polished bar or Machined Polished bar, Cold finished material, or Machined Polished bar, Cold finished material, or Machined
Ra3.2 Machined Polished bar or Machined Polished bar, Cold finished material, or Machined Polished bar, Cold finished material, or Machined
Ra1.6 Machined Polished bar or Machined Machined Polished bar or Machined

Corresponding table of standard materials

Material Machined Cold finished material(h9) Polished bar(g6 and h7)
1045 Carbon Steel​
1018 Carbon Steel​
4135 Alloy Steel​
4140 Alloy Steel ​
O1 Tool Steel​
SKD11
SKD61
SUJ2
2017 Aluminum Alloy
5056 Aluminum Alloy
6061 Aluminum Alloy
7075 Aluminum Alloy
303 Stainless Steel
304 Stainless Steel
316 Stainless Steel
440C Stainless Steel
Brass C3604-LCd
Acetal(white,black)
MC Nylon(blue,black ash)
ABS(natural color,black)
PEEK(gray-brown)
PC(transparent, black)
PP(standard, natural color)
PPS(transparent, natural color)
Acrylic(standard, transparent)
UHMWPE(white)
PVC(gray)
Polyacetal (White, Black)
MC nylon (Blue, Black-Gray)
ABS (Natural colour, Black)
PEEK (standard, gray-brown)
PC (Transparent, Black)
PP (Natural colour)

Round bar specification table

Material Maximum Diameter (h9)
1018 Carbon Steel ø3 to ø30 (1 mm increments)
Φ32
Φ34
Φ35
Φ36
Φ38
Φ40
Φ42
Φ44
Φ45
Φ46
Φ48
Φ50
Φ52
Φ55
Φ56
Φ58
Φ60
Φ65
Φ70
Φ75
Φ80
Φ85
Φ90
Φ95
Φ100
Φ105
Φ110
Φ115
Φ120
Φ125
Φ130
Φ140
Φ150
Material Maximum Diameter (g6 and h7 and h9)
1045 Carbon Steel ø3 to ø30 (1 mm increments)
Φ32
Φ34
Φ35
Φ36
Φ38
Φ40
Φ42
Φ44
Φ45
Φ46
Φ48
Φ50
Material Maximum Diameter (h9)
1045 Carbon Steel Φ52
Φ55
Φ60
Φ65
Φ70
Φ75
Φ80
Φ85
Φ90
Φ95
Φ100
Φ110
Φ120
Φ130
Φ140
Φ150
Material Maximum Diameter (g6 and h7)
303 Stainless Steel 304 Stainless Steel 316 Stainless Steel Φ3~Φ18(1 mm increments)
Φ20~Φ26(1 mm increments)
Φ28
Φ30
Φ32
Φ35
Φ36
Φ38
Φ40
Φ42
Φ45
Φ50
Material Maximum Diameter (h9)
303 Stainless Steel 304 Stainless Steel 316 Stainless Steel Φ55
Φ60
Φ65
Φ70
Φ75
Φ80
Φ85
Φ90
Φ95
Φ100
Material Maximum Diameter (h9)
4135 Alloy Steel​ Φ4~Φ12(1 mm increments)
Φ12.7
Φ13~Φ21(1 mm increments)
Φ22
Φ24
Φ25
Φ26
Φ28
Φ30
Φ32
Φ35
Φ40
Φ45
Φ50

Caution

  • If it is not included in the standard table, it will be shaved.
  • Shaving will be used for non-standard materials

What is maximum diameter?

  • The maximum diameter on the cylindrical surface of the product. (highlighted in light blue)
  • Even if the groove is divided by a groove as shown in Figure 3, it is recognized as one element as long as it has the same diameter.
25540_17_usEN

Figure 1

25540_18_usEN
Figure 2
25540_19_usEN

Figure 3