Bronze Tube Tolerances

continuous_casting_bronze_tubes

Continuous cast bronze tube is cast or manufactured with additional stock on both the ID (inner diameter) and OD (outer diameter) in order to finish to the stated nominal size.  The nominal size is the listed ID & OD size.  For example if you were to order a piece of bronze tube stock with a nominal size of 1 x 2, this means that the ID will finish to 1” and the OD will finish to 2”.  In order to accomplish this the bronze tube is cast with a pre-determined additional amount of stock on both the ID and OD.  So in reality the ID of the 1 x 2 sizes is actually slightly smaller than 1” and the OD is slightly larger than 2”.

When we speak of bronze tube tolerances we are talking about exactly how much extra stock is on either the ID and/or OD of the material.  The amount of additional stock varies by both alloy type and outer diameter size of the tube.  The below chart will help you understand the actual cast size of the most common continuous cast bronze alloys.

 

Tubes and Solids –  Alloys C93200, C92200, & C93700
Nominal OD Stock on ID Stock on OD
Up to 1.9999” -0.019/-0.064 +0.029/+0.039
Over 2” to 3.999” -0.019/ -0.064 +0.034/+0.044
Over 4” to 5” -0.047/-0.109 +0.055/+0.071
Over 5” to 9” -0.062/-0.158 +0.078/+0.110
Over 9” to 12” -0.078/-0.182 +0.094/+0.134
Over 12” to 16” -0.102/-0.214 +0.118/+0.166

 

Tubes and Solids –  Alloys C95400, C95900, & C95500
Nominal OD Stock on ID Stock on OD
Up to 3” -0.0505/-0.0955 +0.029/+0.039
Over 3” to 4.500” -0.090/ -0.145 +0.034/+0.044
Over 4.50” to 5.50” -0.100/-0.165 +0.055/+0.071
Over 5.50” to 9.00” -0.135/-0.210 +0.163/+0.213

 

Tubes and Solids –  Alloys C86300
Nominal OD Stock on ID Stock on OD
Up to 3” -0.0505/-0.0955 +0.029/+0.039
Over 3” to 4.500” -0.090/ -0.145 +0.034/+0.044
Over 4.50” to 5.50” -0.100/-0.165 +0.055/+0.071
Over 5.50” to 9.00” -0.135/-0.210 +0.163/+0.213

 

Add a Comment

Your email address will not be published. Required fields are marked *