High Strength Tin Bronze Bar Wear-Resistant Industrial Use Factory Round Bar Cutting Processing Service Low Price Copper Bars Tin bronze square bar

Tin Bronze Square Bars (C54400 / C51000 / C52100, etc.)

We specialize in manufacturing high-precision tin bronze square bars using horizontal/vertical continuous casting or semi-continuous casting processes to ensure uniform chemical composition, refined grain structure, and freedom from internal porosity and inclusions. Billets are further processed through multi-pass hot extrusion followed by multiple cold-drawing cycles, achieving dimensional tolerances of ±0.05 mm and diagonal tolerances ≤0.10 mm, with consistent corner radii on all four faces.

Full-process quality control

● Raw materials: high-purity cathode copper + phosphorus-deoxidized copper + refined tin ingots; chemical composition verified by optical emission spectrometry for each heat, with critical elements (Sn, P, Pb, etc.) controlled within ±0.02 %.
● In-line infrared temperature monitoring and electromagnetic stirring during casting eliminate segregation and looseness.
● 100 % ultrasonic inspection per heat in accordance with EN 1972 Class B or equivalent standards, ensuring absence of internal cracks or shrinkage defects.
● Mechanical properties tested and reported per heat: typical values ≥550 MPa tensile strength, ≥15 % elongation (grade dependent), with full test certificates provided.
● Clean, scale-free surface finish; optional polished or protective film wrapping available to meet high-speed stamping and precision machining requirements.

These square bars are widely specified in high-reliability connector terminals, automotive relay springs, precision instrument guide rails, industrial valve wear pads, and other applications demanding tight dimensional control, stable mechanical properties, and excellent machinability.

We focus on supplying traceable, verifiable, and highly consistent tin bronze square bars to large industrial customers, offering annual frame agreements, custom alloy development, and dedicated inventory programs.