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Toll Free: (800) 403-9777
Phone: (603) 746-2001
Fax: (603) 746-2427

fastquote@prototek.com

244 Burnham Intervale Rd
Contoocook, NH 03229

Bend Deductions

The following information has been tested by Prototek® Sheet Metal and may vary from other manufacturers.
Radius - Internal Radius
Bend Deduction - Amount subtracted per bend (coined/set bends)
Air Bend - Deduction for air bend.
K-Factor - used for engineering programs, such as Pro-E and Solid Works


Cold Rolled Steel - CRS
Thickness Radius Bend Deduction Notes Air Bend K-Factor
.018 .030 .034     .5261
.020 .030 .039     .4417
.024 .030 .036   .047 .6599
.030 .015 .047     .4125
.030 .030 .047   .054 .5491
.030 .060 .067     .3979
.030 .187 .122     .3875
.036 .030 .054     .546
.036 .090 .085     .4532
.040 .030 .065     .4437
.040 .060 .075     .4035
.048 .030 .072   .078 .4891
.048 .060 .088     .4477
.048 .090 .101     .4460
.048 .202 .151     .4204
.060 .030 .088   .103 .4762
.060 .045 .095     .4702
.060 .060 .106     .4218
.060 .375 .232      
.060 1.000 .510     .4160
.074 .030 .112   .125 .4318
.090 .030 .131   .147 .4377
.090 .125 .172     .4361
.104 .030 .151     .4277
.120 .030 .180   .205 .3866
.134 .030 .201     .3795
.175 .030 .270      
.178 .015   3/4 DIE .280  
.187 .030 .280 1.50 DIE .318  
.187 .030 - 1.25 DIE .300  
.187 .060 .305     .3226

 

Galvanneal/Galvanized Steel
Thk Radius Bend D. Comments Air Bend K-Factor
.030 .030 .051      
.036 .030 .058      
.048 .030 .076      
.048 .060 .092      
.060 .030 .092      
.060 .060 .110      
.074 .030 .116      
.090 .030 .135      
.104 .030 .155      
.120 .030 .185      
.134 .030 .205      

 


Offset  GAP  A 

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