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C31400 Leaded Commercial Bronze (CDA 314)
Short Description:
Leaded Commercial Bronze C31400 combines the natural corrosion resistance of C22000 with the machinability typical of leaded brasses. Like C22000, it is an alpha brass nominally composed of 89% copper and 9% zinc, but it also contains approximately 2% lead to impart free-cutting characteristics. The relatively low zinc content of C31400 provides excellent corrosion resistance in potable water along with a pleasing golden color that matches C22000 hardware. Alloy C31400 is also suitable for outdoor use due to its resistance to stress corrosion cracking and to corrosion in general, but where the highest strength is not required.
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| Bronze, Copper & Brass Square Bars | |||
| Parameter | Bronze Square Bar (C93200 / C95400) | Copper Square Bar (C11000 / C12200) | Brass Square Bar (C36000 / C38500) |
| Material Type | Bearing Bronze / Aluminum Bronze | Electrolytic Tough Pitch (ETP) / Phosphorus Deoxidized | Free-Cutting Brass / Architectural Bronze |
| Standard | ASTM B505 / B124 | ASTM B187 / B124 | ASTM B16 / B453 |
| Size Range (A/F) | 1/4" to 4" (6 mm to 102 mm) | 1/8" to 4" (3 mm to 102 mm) | 1/8" to 4" (3 mm to 102 mm) |
| Length | 13" (330 mm) or 6.5 ft (2 m) stock | 12 ft (3.66 m) or Custom | 12 ft (3.66 m) or Custom |
| Temper Condition | As Cast / Annealed (O60) | Soft (Annealed – O60), Half-Hard (H58), Hard (H80) | Half-Hard (H02), Hard (H04) |
| Tensile Strength (Ultimate) | 35,000 – 103,000 psi (240 – 710 MPa) * | 30 – 38 ksi (210 – 260 MPa) | 48 – 65 ksi (330 – 450 MPa) |
| Yield Strength (0.5% Ext.) | 18,000 – 52,000 psi (125 – 360 MPa) * | 10 – 30 ksi (70 – 205 MPa) | 20 – 45 ksi (140 – 310 MPa) |
| Hardness (Brinell) | 65 – 220 HB * | 40 – 50 HB | 80 – 110 HB |
| Corrosion Resistance | Excellent (seawater) to Moderate * | Excellent | Good |
| Typical Applications | Bushings, valve seats, wear plates, pump components, guide blocks, heavy-duty fasteners | Bus bars, grounding squares, electrical connectors, heat sinks, decorative hardware, fasteners | Nuts, bolts, valve stems, lock components, gears, screw machine parts, ornamental trim, architectural hardware |
