Tubos de freno, accesorios y herramientas

This copper nickel (also called cupro nickel, cunifer, kunifer) tubing is made of 90% copper and 10% nickel, made by giant Chinese copper tube manufacturers that are ISO 9001 certified.

• Much more softer than steel tubing
• Extremely easy to bend and flare
• Absolutely rust free
• Meets SAE J1677 Surface Vehicle Standard
• Suitable for ISO/DIN bubble flare,  ISO/SAE double flare (inverted flare), and single flare.

Properties

OD	4.76+/-0.08mm
Wall	0.7+/-0.08mm
Tensile Strength	40 ksi (275MPa)
Yield Strength	15 ksi (105MPa)
Expansion	30% min
Theoretical Burst Pressure	9912 psi i.e. 68.3MPa min

NOTE:

1. We can also supply tubing of 0.75mm, or even thicker wall , to further increase pressure resistance.
2. Burst pressure calculation could vary according to the stress limit applied to the formula.

P_b=1.155*σ_s*(2-σ_s/σ_b)*lnK
K=D₀/(D₀-2δ)

Where

P_b Burst pressure, MPa
σ_s Yield strength, MPa
σ_b Tensile strength, MPa
D₀ Outside diameter, mm
δ Wall thickness, mm

Inspections

1. Eddy Current (Non-Destructive)
2. Flattening Test
3. Expansion Test
4. Tension Test
5. Pressure Proof Test
6. Mercurous Nitrate Test

2021-06-20