BrCr - CuCr sheet, strip, tube

International Equivalent

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
Mark	Analogue	W. Nr.	Aisi Uns	En	Order
BRH				CuCr1Zr	Delivery from the stock, in stock

Industrial application

Used in welding electrodes, welding machine equipment, and electrical components.

Grade: Bronze ash-free bronze, machined under pressure.

Chemical properties of BrX grade alloy, in percent.

Designation	Description
Designation	Description
Cu	98,5 - 99,6
Cr	0,4 - 1,2

Physical characteristics of BrX alloy

a 10 6 (1/Grad)	E 10- 5 (MPa)	T (Grad)	l (W/(m-grad))	R 10 9 (Ohm-m)	C (J/(kg-grad))	r (kg/m3)
a 10 6 (1/Grad)	E 10- 5 (MPa)	T (Grad)	l (W/(m-grad))	R 10 9 (Ohm-m)	C (J/(kg-grad))	r (kg/m3)
17	1.12	20	8900

Mechanical characteristics of BrC at 20oC

Rolled products	δ5 (%)	(%) (Np.	Size	σ in (MPa)	sT (MPa)	KCU (kJ/m2)	ψ %
Rolled products	δ5 (%)	(%) (Np.	Size	σ in (MPa)	sT (MPa)	KCU (kJ/m2)	ψ %
soft alloy	60-70	300-450
hard alloy	7-10	700-800

Useful information and properties:

The coefficient of friction without lubrication is 0.12

Coefficient of friction with grease is 0.01

Melting point, °C: 995

Alloy hardness: HB 10 -1 = 70 - 90 MPa

Tin-free bronzes do not contain the scarce tin in their composition. They can serve not only as a substitute for tin bronzes, tin-free bronzes are often superior to them with their anticorrosive, technological and mechanical properties. Tin-free bronzes can be beryllium, aluminum, manganese, etc., depending on the main alloying element. Tin-free bronzes machined under pressure comply with GOST 18 175-78. This standard applies to tin-free bronze, machined under pressure and intended for the production of semi-finished products and blanks.

Description	Designation	Description	Designation
Description	Designation	Description	Designation
- Tensile strength (tensile strength), in MPa	σ _in	- relative slump at cracking, in %	å
- elastic limit, in MPa	σ0_,05	- torsional strength limit (ultimate tangential stress), in MPa	Jê
- yield strength, in MPa	σ0_,2	- bending strength limit, in MPa	σd
- relative elongation after rupture, in %	δ5,δ4,δ10	- endurance limit at symmetrical bending cyclic load, in MPa	σ-1
- compression (yield strength), in MPa	σcj0,05 and σcj	- torsional symmetrical cyclic load endurance limit, MPa	J-1
- shear displacement, in %	ν	- number of load cycles	n
- short-term strength limit, in MPa	s in	- electrical resistivity, in Ohm-m	R and ρ
- relative contraction, in %	ψ	- nominal elastic modulus, in GPa	E
- impact toughness for specimens with concentrators according to species V and U, in ^J/cm2	KCU and KCV	- Test temperature, °C	T
- yield strength - permanent deformation (limit of proportionality), in MPa	sT	- thermal conductivity coefficient in W/(m- °С)	l and ë
- Brinell hardness	HB	- specific heat capacity in [J/(kg-rad)	C
- Vickers hardness	HV	- specific gravity ^kg/m3	pn and r
- Rockwell hardness, Sc.	HRCe	- coefficient of linear thermal expansion (1/°C)
- HRB Rockwell hardness, Sc.	HRB	- Longitudinal strength limit (MPa)	σtT
- Shore hardness	HSD	- modulus of elasticity (torsional shear) GPa

Delivery

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