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

Turning

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 ー
Hard Chrome Plating Target
Trivalent Chromate (clear) Target
Trivalent Chromate (black) Target
Black Oxide ー
Salt-Bath Nitrocarburizing ー
Low Temperature Black Chrome Target
Phosphate Coating ー
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) Hard Anodize (Clear)
Clear Anodize Black Anodize Black Anodize (matte) Hard Anodize (Clear)

Quenching Quality Standards

Appearance after quenching

After quenching

Blast finishing

Grinding finishing (outer diameter)

Grinding finishing (inner diameter)

Caution

  • Media blasting may be performed to remove surface contamination after quenching. There will be no change in accuracy after the treatment.
  • The photo shows sandblasting, but shot blasting is also available. Blast type cannot be specified.
  • Grinding may be performed to guarantee accuracy for tolerances on the outer or inner diameter. The appearance of ground surfaces will be as shown in the above figure.
  • Grinding cannot be specified. The factory will determine if grinding is necessary to guarantee dimensional accuracy.
  • The threads will also be hardened. Depending on the application, the thread may be damaged. If you do not want the thread to be hardened, please specify Selective Hardening (Induction Hardening) to select an area that does not include the thread.
  • Hardness measurement marks may remain in areas where surface roughness is not specified or near the center of the end face of the part. To confirm the inspection points in advance, please add information in the comments and request a manual quote
Induction Hardening

Caution

  • Grinding may be performed to guarantee accuracy for tolerances on the outer or inner diameter. The appearance of ground surfaces will be as shown in the above figure.
  • Grinding cannot be specified. The factory will determine if grinding is necessary to guarantee dimensional accuracy.
  • A hardened depth of 1mm or more into the part surface is guaranteed. The hardened depth may be 1.5 mm or more.
  • The hardened depth cannot be specified.
  • The Induction Hardening process may also harden edges and surfaces adjacent to the surface specified for hardening.

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​ 〇 〇 〇
1018 Carbon Steel​ 〇 〇
4135 Alloy Steel​ 〇
4140 Alloy Steel ​ 〇
O1 Tool Steel​ 〇
SKD11 〇
SKD61 〇
SUJ2 〇
2017 Aluminum Alloy 〇
5056 Aluminum Alloy 〇
6061 Aluminum Alloy 〇
7075 Aluminum Alloy 〇
303 Stainless Steel 〇 〇
304 Stainless Steel 〇 〇
316 Stainless Steel 〇 〇
440C Stainless Steel 〇
Brass C3604-LCd 〇
Acetal(white,black) 〇
MC Nylon(blue,black ash) 〇
ABS(natural color,black) 〇
PEEK(gray-brown) 〇
PC(transparent, black) 〇
PP(standard, natural color) 〇
PPS(transparent, natural color) 〇
Acrylic(standard, transparent) 〇
UHMWPE(white) 〇
PVC(gray) 〇
Polyacetal (White, Black) 〇
MC nylon (Blue, Black-Gray) 〇
ABS (Natural colour, Black) 〇
PEEK (standard, gray-brown) 〇
PC (Transparent, Black) 〇
PP (Natural colour) 〇

Round bar specification table

Material Maximum Diameter (h9)
1018 Carbon Steel ø3 to ø30 (1 mm increments)
ø32
ø34
ø35
ø36
ø38
ø40
ø42
ø44
ø45
ø46
ø48
ø50
ø52
ø55
ø56
ø58
ø60
ø65
ø70
ø75
ø80
ø85
ø90
ø95
ø100
ø105
ø110
ø115
ø120
ø125
ø130
ø140
ø150
Material Maximum Diameter (g6 and h7 and h9)
1045 Carbon Steel ø3 to ø30 (1 mm increments)
ø32
ø34
ø35
ø36
ø38
ø40
ø42
ø44
ø45
ø46
ø48
ø50
Material Maximum Diameter (h9)
1045 Carbon Steel ø52
ø55
ø60
ø65
ø70
ø75
ø80
ø85
ø90
ø95
ø100
ø110
ø120
ø130
ø140
ø150
Material Maximum Diameter (g6 and h7)
303 Stainless Steel 304 Stainless Steel 316 Stainless Steel ø3~ø18(1 mm increments)
ø20~ø26(1 mm increments)
ø28
ø30
ø32
ø35
ø36
ø38
ø40
ø42
ø45
ø50
Material Maximum Diameter (h9)
303 Stainless Steel 304 Stainless Steel 316 Stainless Steel ø55
ø60
ø65
ø70
ø75
ø80
ø85
ø90
ø95
ø100
Material Maximum Diameter (h9)
4135 Alloy Steel​ ø4~ø12(1 mm increments)
ø12.7
ø13~ø21(1 mm increments)
ø22
ø24
ø25
ø26
ø28
ø30
ø32
ø35
ø40
ø45
ø50

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

Applicable conditions for Hexagonal bar

If the distance across the flats of the hexagon matches a standard size, it is processed with hexagonal bar stock and shipped.

Hexagonal surfaces may be scratched because they are stock, unmachined surfaces.

Example (1)

Example (2)

What is the distance across the flats?

The distance between two opposite sides of a hexagon.

Hexagonal rod standards and specifications table

Material
Tolerance(h12) Tolerance
1045 Carbon Steel 1018 Carbon Steel 4135 Alloy Steel 303 Stainless Steel 304 Stainless Steel 316 Stainless Steel Brass C3604-LCd
Distance across the flats 6 〇 〇 × 〇 〇 × 0 -0.15 〇 ±0.06
7 〇 〇 × 〇 〇 〇 〇 ±0.08
8 〇 〇 〇 〇 〇 〇 ×
9 〇 〇 × × × × ×
10 〇 〇 〇 〇 〇 〇 0 -0.18 〇
12 〇 〇 〇 〇 〇 〇 〇 ±0.11
13 〇 〇 〇 〇 〇 〇 ×
14 〇 〇 〇 〇 〇 〇 〇
17 〇 〇 〇 〇 〇 〇 〇
19 〇 〇 〇 〇 〇 〇 0 -0.21 〇
21 〇 〇 〇 〇 〇 〇 × ±0.18
22 〇 〇 〇 〇 〇 〇 〇
23 〇 〇 〇 〇 〇 〇 ×
24 〇 〇 〇 〇 〇 〇 〇
26 〇 〇 〇 〇 〇 〇 〇
27 〇 〇 〇 〇 〇 〇 〇
29 〇 〇 × 〇 〇 〇 ×
30 〇 〇 × 〇 〇 〇 0 -0.25 〇
32 〇 〇 × 〇 〇 〇 〇
35 〇 〇 × 〇 〇 〇 〇
36 〇 〇 × 〇 〇 〇 ×

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