Description
This CDA C937 certified reference material is a copper alloy widely used as a standard for calibrating and verifying your spectrometer (Handheld XRF, Benchtop XRF, Handheld LIBS, Spark-OES, etc.). This material is precisely manufactured and certified to have traceable measurements and specified impurity levels, ensuring reliable results for laboratories performing calibration, quality control, and materials testing.
Certified C937 Bronze Chemical Composition
| Element | Composition |
| Ag | 0.05% |
| Al | 0.0013% |
| Sb | 0.078% |
| As | 0.005% |
| Bi | 0.011% |
| Cu | 80.35% |
| Fe | 0.008% |
| Pb | 9.42% |
| Mn | 0.0016% |
| Ni | 0.170% |
| P | 0.073% |
| S | 0.026% |
| Si | 0.0019% |
| Sn | 9.65% |
| Zn | 0.146% |
Other Names
SAE 64 Bearing Bronze, High-Leaded Tin Bronze 937, UNS C93700, CDA 937, SAE 64, ASTM B271, ASTM B505, ASTM B584, Federal QQ-C-390, MIL-B-11553 Comp 23
Available Material Forms
- XRF Disc: 38mm Diameter x 7mm Thick
- OES Disc: 38mm Diameter x 19mm Thick


