constantan rod (CuNi45, Copel, Alloy 45)
OhmAlloy049 is a copper-nickel alloy (Cu56Ni44 alloy) characterized by high electrical resistance, high ductility and good corrosion resistance. It is suitable for use at temperatures up to 400°C
Typical applications for OhmAlloy49 are temperature-stable potentiometers, industrial rheostats and electric motor starter resistances.The combination of negligible temperature coefficient and high resistivity makes the alloy particulary suitable for the winding of precision resistors.
OhmAlloy049 is manufactured from electrolytic copper and pure nickel. In finer wire sizes the alloy is designated as OhmAlloy49TC(Thermocouple)
Common Name: C17200, alloy25, CuBe2, QBe2.0, DIN 2.1247
CuBe2--C17200 Beryllium Copper is the most commonly utilized Copper Beryllium alloy and is notable for its highest strength and hardness compared to commercial copper alloys. C17200 alloy contains appr. 2% of beryllium and achieves its ultimate tensile strength can exceed 200 ksi, while the hardness approaches Rockwell C45. Meanwhile, the electrical conductivity is a minimum of 22% IACS in the fully aged condition.C17200 also exhibits exceptional resistance to stress relaxation at elevated temperatures.
Typical Application for C17200 Beryllium Copper Alloys:
Electrical Industry: Electrical Switch and Relay Blades, Fuse Clips, Switch Parts, Relay parts, Connectors, Spring Connectors, Contact Bridges, Belleville Washers, Navigational Instruments, Clips
Fasteners: Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts
Industrial: Pumps, Springs, Electrochemical, Shafts, Non-Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems, Diaphragms, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Wear Plates on Heavy Equipment, Bellows, Mining parts
International Specification:
Rods/Bars/Tubes: ASTM B196,251,463; SAE J461,463; AMS 4533,4534,4535; AMS4650,4651;
RWMA Class 4
Strips: ASTM B194, AMS4530,4532; SAE J461,463
Sheets: ASTM B194
Wires: ASTM B197, AMS4725, SAE J461,463
Plates: ASTM B194, SAE J461,463; AMS4530,4533,4534,AMS4650,4651; RWMA Class 4.
European Standards: CuBe2, DIN 2.1247, CW101C to EN
Note:
ASTM: American Society for Testing and Materials
SAE: Society of Automotive Engineers
AMS: Aerospace Materials Specification (Published by SAE)
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to ASTM.
Most Commonly Temper Used:
Rods/Bars/Tubes: A(TB00),H(TD04),AT(TF00),HT(TH04)
Strips: A(TB00),1/4 H(TD01),1/2 H(TD02),H(TD04)
Sheets: A(TB00),1/4 H(TD01),1/2 H(TD02),H(TD04),AT(TF00)
Wires: A(TB00),1/4 H(TD01),1/2 H(TD02),3/4H(TD03),H(TD04)
Plates: A(TB00),H(TD04),AT(TF00),HT(TH04)
Chemical Composition:
Be: 1.85-2.10%
Co+Ni: 0.20% Min.
Co+Ni+Fe: 0.60% Max.
Cu: Balance
Note: Copper plus additions equal 99.5% minimum.
Typical Physical Properties
| Density (g/cm3) | 8.36 |
| Density before age hardening (g/cm3) | 8.25 |
| Elastic Modulus (kg/mm2 (103)) | 13.40 |
| Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C) | 17 x 10-6 |
| Thermal Conductivity (cal/(cm-s-°C)) | 0.25 |
| Melting Range (°C) | 870-980 |
(Temper and Tensile Strength Reference Table As Bellowing)
Temper and Tensile Strength Reference
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.
6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.
