Quality

Reference guide

Highest level of quality

Concast Metal Product Co. is an ISO 9001 certified manufacturer. We have been recognized as the premier producer of continuous-cast copper alloys. We continually adapt to changing markets and industry demand for greater diversity, higher quality with consistent tolerances, and  more eco-friendly products. [ISO 9001 certificates can be viewed here]. Concast is also certified to AS9100 standards and requirements for the aerospace, and oil and gas industries, as well as others. [AS9100 certificate can be viewed here].

Concast is a team of professionals focused on manufacturing the highest quality products at a fair value that meets and exceeds our customers' expectations. Every Concast employee is committed to the pursuit of excellence with continuous improvement of the Quality Management System.

Concast is one of the few manufacturers with the ability to machine dies and molds on-site, therefore eliminating the downtime for these items to be shipped from outside vendors. Our process not only saves you time, but guarantees quality continuous-cast copper alloys and other alloy products.



Product certification

A product certification is provided with every item manufactured at Concast. This guarantees that we meet the exacting specifications of our increasingly specialized customer base. From the moment raw material is received, through order entry, production, inspection, and the final shipment of your product, every step of the process is documented. And to ensure traceability, all of our products are barcoded with the following information: alloy, inspector, control number, size, heat number, and specification.

Minimal amount of variation

Our ability to hold consistent tolerances with minimum variation makes our products ideal for CNC equipment. We are able to perform to this high standard by utilizing precision-machined in-house dies. Additional finishing allowance for tubes and rounds over 13 inches in length is .007 inches per linear inch due to curvature (TIR) inherent in longer lengths of material. This standard applies to both I.D. and O.D. Additional finishing allowance for rectangles over 13 inches in length is .0035 inches per linear inch due to curvature (TIR) in longer lengths of material. This standard applies to both thickness and width. These tolerances found in Concast products are significantly better than sand, centrifugal, and other types of casting methods.

Straightness tolerances are also critical due to the increased speed capabilities of new generation CNC equipment. All of our bars and tubes are Medart® straightened enabling them to exceed ASTM B505 straightness specifications. As a result, our customers are able to utilize the optimum performance of their equipment with the result of increasing their competitive advantage.

Concast products can be ordered to the cast size or “to finish to” condition. Concast standard stock is produced oversized in the “to finish to” condition so the customer will be assured the size ordered will finish machine to that size with as little as .031 inches of material to be removed. Concast can cast to a near-net shape with as little as 0.015" variation to the shape.

Straightness tolerances:

Product Length ft* (m) Maximum Curvature† (Depth of arc), in. (mm)
Round rod or tube up to 10 (3.05) 1/4 (6.4) in any 5-ft (1.52-m) portion
Round rod or tube 10 (3.05) and over 1/2 (13) in any 10-ft (3.05-m) portion*
Bar and shape any length 1/2 (13) in any 6-ft (1.83-m) portion*†
*Total length.
†Applicable to any longitudinal surface or edge.


To finish to tolerances:

Leaded bronze tubes and solids

Finished Outside Diameter Inside Diameter Outside Diameter
Up to 2" inclusive -0.0190" to -0.0640" +0.0300" to +0.0400"
Over 2" to 4" inclusive -0.0190" to -0.0640" +0.0340" to +0.0440"
Over 4" to 5" inclusive -0.0470" to -0.1090" +0.0550" to +0.0710"
Over 5" to 9" inclusive -0.0620" to -0.1580" +0.0780" to +0.1100"
Over 9" to 12" inclusive -0.0780" to -0.1820" +0.0940" to +0.1340"
Over 12" to 16" inclusive -0.1020" to -0.2140" +0.1180" to +0.1660"

Leaded bronze rectangles

Finished Width Thickness Width
Up to 3.999" inclusive +0.047" to +0.079" +0.047" to +0.079"
Over 4" to 5" inclusive +0.078" to +0.110" +0.078" to +0.110"
Over 5.001" +0.109" to +0.141" +0.109" to +0.141"

Aluminum bronze tubes and solids

Finished Outside Diameter Inside Diameter Outside Diameter
Up to 3.000" inclusive -0.0505" to -0.0955" +0.0525" to +0.0725"
Over 3" to 4 1/2" inclusive -0.0900" to -0.1450" +0.0790" to +0.1090"
Over 4 1/2" to 5 1/2" inclusive -0.1000" to -0.1650" +0.1050" to +0.1450"
Over 5 1/2" to 10" inclusive -0.1350" to -0.2100" +0.1630" to +0.2130"

Aluminum bronze rectangles

Finished Width Thickness Width
Up to 3" inclusive +0.067" to +0.107" +0.043" to +0.083"
Over 3" to 5 1/2" inclusive +0.067" to +0.107" +0.043" to +0.083"
Over 5 1/2" to 12" inclusive +0.087" to +0.127" +0.063" to +0.113"
Over 12" +0.163" to +0.263" +0.125" to +0.225"
NOTE: Thickness of rectangles 3" and greater will use the over 12" wide tolerances.


Diameter tolerances:

Nickel-aluminum bronze solids (C63000)

Size Tolerance
0.250" to 0.500" inclusive +/-0.002"
0.501" to 1.000" inclusive +/-0.003"
1.001" to 2.000" inclusive +/-0.004"
2.001" to 3.000" inclusive +/-0.006"
3.001" to 4.000" inclusive +/-0.008"
4.001" to 5.000" inclusive +/-0.010"
5.001" to 6.000" inclusive +/-0.012"
6.001" to 7.000" inclusive +/-0.014"
7.001" to 8.000" inclusive +/-0.016"
8.001" to 9.000" inclusive +/-0.018"
9.001" to 10.000" inclusive +/-0.020"

Diameter tolerances:

Aluminum bronze solids (C64200)

Size Tolerance
0.250" to 0.500" inclusive +/-0.002"
0.501" to 1.000" inclusive +/-0.003"
1.001" to 2.000" inclusive +/-0.004"
2.001" to 3.000" inclusive +/-0.006"
3.001" to 4.000" inclusive +/-0.008"
4.001" to 5.000" inclusive +/-0.010"
5.001" to 6.000" inclusive +/-0.012"
6.001" to 7.000" inclusive +/-0.014"
7.001" to 8.000" inclusive +/-0.016"
8.001" to 9.000" inclusive +/-0.018"
9.001" to 10.000" inclusive +/-0.020"