Target Range for R-Bending (Large Radius)

  • The R-bend shape is subject to FR bending (feed bending), which will result in die marks. Please refer to “Bending Specifications” for details.
  • *If you would like to request R-bending processing without leaving die marks, please write it in the comment column for manual quotation.

Metric Thickness Gauge Standard

Material: Ferrous Metals Surface Treatment Sheet Thickness *1 External Dimensions (Length, Width, Height) *2
Sheet Thickness ≤2.0 mm Sheet Thickness >2.0 mm
Low Carbon Steel (Cold/Hot Rolled)
 – 0.8, 1.0, 1.2, 1.6, 2.0, 2.3, 3.2 5–1200 10–1200
Powder Coating *3 0.8, 1.0, 1.2, 1.6, 2.0, 2.3, 3.2
Wet Paint *3
Electroless Nickel Plating 0.8, 1.0, 1.2, 1.6, 2.0, 2.3, 3.2 5–1200 *4 10–1200 *4
Black Oxide
Trivalent Chromate (Clear)
Trivalent Chromate (Black) 0.8, 1.0, 1.2, 1.6, 2.0, 2.3, 3.2 5–300 10–300
Low Carbon Steel (Cold Rolled) Electrolytic Zinc Plating *5 0.8, 1.0, 1.2, 1.6, 2.0, 2.3, 3.2 5–1200 10–1200
Hot Zinc Plating *5 1.6, 2.3
Material: Stainless Steel Finishing Method Sheet Thickness *1 External Dimensions (Length, Width, Height) *2
Sheet Thickness ≤2.0 mm Sheet Thickness >2.0 mm
  • 304 Stainless Steel
 2B 0.8, 1.0, 1.2, 1.5, 2.0, 2.5, 3.0 5–1200 10–1200
Single-Sided #400-Grit Polished *6 0.8, 1.0, 1.2, 1.5, 2.0, 3.0
  • 430 Stainless Steel
 2B 0.8, 1.0, 1.2, 1.5, 2.0, 3.0
Material: Aluminum Surface Treatment Sheet Thickness *1 External Dimensions (Length, Width, Height) *2
Sheet Thickness ≤2.0 mm Sheet Thickness >2.0 mm
5052 Aluminum Alloy — 0.8, 1.0, 1.2, 1.5, 1.6, 2.0, 2.5, 3.0 5–920 10–920
Clear Anodize 5–920 *4 10–920 *4
Black Anodize
5052 AL Alloy Pre-Finish, Clear Anodize Clear Anodize 1.0 1.5 2.0 3.0 5~1100 10~1100
5052 AL Alloy Pre-Finish, Black Anodize Black Anodize
Material: Perforated Metal Hole Diameter × Hole Pitch *7 Open Area Ratio Sheet Thickness *1 External Dimensions (Length, Width, Height) *2
  • Perforated Metal – 60° Staggered Round Hole Type –
  • (304 Stainless Steel-BA, Bright Annealed)
 ø1 × 2p 22.60% 0.8 30–900
ø2 × 3p 40.30% 1.0
ø3 × 5p 32.70% 1.0, 1.5
ø5 × 8p 35.40% 1.0, 1.5
ø8 × 12p 40.20% 1.5
  • *1 The plate thickness tolerance is ±10% (reference value).
  • *2 The maximum and minimum dimensional values are limited by the shape of the bend.
  • *3　Select a paint color from the table (Appendix Table).
  • *4　The maximum length and width dimensions (Appendix Table) may vary depending on the surface treatment.
  • *5　The machining surface will not be plated as it is a pre-treatment material.
  • *6　Protective sheets (one-side only) affixed.
  • *7　See figure below for hole diameter and hole pitch standards.
  • However, the hole pitch orientation can be set to any value.
■Inner R range
Plate thickness Minimum inner R Maximum inner R
0.8 10 150
1.0 10 150
1.2 10 150
1.5 10 150
1.6 10 150
2.0 10 *8 150
2.3 15 150
2.5 10 150
3.0 30 150
3.2 30 150
  • *8 Steel material is R15 as minimum inner R.
Inner R range
(Appendix Table) Maximum Sizes for Each Surface Treatment External Dimensions (Maximum)
Length Width Height
Electroless Nickel Plating 1200mm 800mm 300mm
Black Oxide
Trivalent Chromate (White)
5052 Aluminum Alloy(Without surface treatment) 1200mm 920mm 920mm
Anodized (White) 600mm 400mm
Anodized (Black)

Inch Gauge Standard

Material: Ferrous MetalsSurface TreatmentSheet Thickness (Inch) *1(mm)External Dimensions *2 *4
LengthWidthHeight
Low Carbon Steel (Cold/Hot Rolled)
–0.0299″ (#22), 0.0359″ (#20), 0.0418″ (#19),
0.0478″ (#18), 0.0538″ (#17), 0.0598″ (#16),
0.0747″ (#14), 0.0897″ (#13), 0.1046″ (#12),
0.1196″ (#11)		0.759mm (#22), 0.912mm (#20), 1.062mm (#19), 1.214mm (#18), 1.367mm (#17), 1.519mm (#16), 1.897mm (#14), 2.278mm (#13), 2.657mm (#12), 3.038mm (#11)5–1200mm (47.24″)
Paint *3
5–609.6mm (24″)5–304.8mm (12″)
Black Oxide
Trivalent Chromate (Clear)
Trivalent Chromate (Black)
Low Carbon Steel (Cold Rolled)Electrolytic Galvanized *5

0.0336″ (#22), 0.0396″ (#20), 0.0516″ (#18),
0.0635″ (#16), 0.0785″ (#14)

0.701mm (#24), 1.006mm (#20), 1.311mm (#18), 1.613mm (#16), 1.994mm (#14)5–1200mm (47.24″)
Hot Galvanized *50.0276″ (#24), 0.0336″ (#22), 0.0516″ (#18),
0.0635″ (#16), 0.0785″ (#14)		0.701mm (#24), 0.853mm (#22), 1.311mm (#18), 1.613mm (#16), 1.994mm (#14)5–1200mm (47.24″)
Material: Stainless SteelSurface FinishSheet Thickness (Inch) *1(mm)External Dimensions *2 *4
LengthWidthHeight
  • 304 Stainless Steel
2B0.0312″ (#22), 0.0375″ (#20), 0.0437″ (#19), 0.0500″ (#18), 0.0625″ (#16), 0.0781″ (#14), 0.0937″ (#13), 0.1094″ (#12), 0.1250″ (#11)0.792mm (#22), 0.953mm (#20), 1.110mm (#19), 1.270mm (#18), 1.588mm (#16), 1.984mm (#14), 2.380mm (#13), 2.779mm (#12), 3.175mm (#11)5–1200mm (47.24″)
Single Sided #4 Brushed *60.0312″ (#22), 0.0375″ (#20), 0.0437″ (#19), 0.0500″ (#18), 0.0625″ (#16), 0.0781″ (#14), 0.0937″ (#13)0.792mm (#22), 0.953mm (#20), 1.110mm (#19), 1.270mm (#18), 1.588mm (#16), 1.984mm (#14), 2.380mm (#13)
Material: Aluminum AlloySurface TreatmentSheet Thickness (Inch) *1(mm)External Dimensions *2 *4
LengthWidthHeight
5052 Aluminum AlloyClear—0.025″, 0.032″, 0.040″, 0.050″, 0.063″, 0.080″, 0.090″, 0.100″, 0.125″0.635mm, 0.813mm, 1.016mm, 1.270mm, 1.600mm, 2.032mm, 2.286mm, 2.540mm, 3.175mm5–1200mm (47.24″)
Anodize (Clear)5–609.6mm (24″)5–304.8mm (12″)
Anodize (Black)
  • *1 The plate thickness tolerance is ±10% (reference value).
  • *2 The maximum and minimum dimensional values are limited by the shape of the bend.
  • *3 Select a paint color from the table (Appendix Table).
  • *4 The maximum length and width dimensions (Appendix Table) may vary depending on the surface treatment.
  • *5 The machining surface will not be plated as it is a pre-treatment material.
  • *6 Protective sheets (one-side only) affixed.
■Inner R range
Plate thicknessMinimum inner RMaximum inner R
#240.394″5.905″
#220.394″5.905″
#200.394″5.905″
#190.394″5.905″
#180.394″5.905″
#160.394″5.905″
#140.394″5.905″
#130.394″5.905″
#120.394″5.905″
#110.181″5.905″
Inner R range

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