With a given TKHR alloys - Се alloys
Technical characteristic
Alloys with a given thermal coefficient of linear expansion (made from iron and nickel) are divided into three groups: Group 1 — has a minimum coefficient (<3 — 10−6 K-1), rarely used. Alloys 29NK, 42H, 18CrTFu and others have an average coefficient (3 — 10−6 — 12 — 10−6 K-1) and high (from 12 — 10−6 to 27 — 10−6 K-1). They are mainly used for electric contacts junctions with glass and ceramics. The third group consists of 75GND, 22NX, etc., which are used as active components of thermo-metals.
The second group.
Percent composition «Kovar», 29NK GOST 10994−74
| P | S | C | Cr | Ti | Al | Cu | Si | Mn | Ni | Co | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.015 | ≤0.015 | ≤0,03 | ≤0,1 | ≤0,1 | ≤0,2 | ≤0,2 | ≤0,3 | ≤0,4 | 29 | 17−18 | 52−54 |
42H marking means that the alloy contains about 42% nickel.
Percentage composition of 42H GOST 10994−74
| Ni | Cu | P | Mn | Si | C | Fe | S |
|---|---|---|---|---|---|---|---|
| 41.5 — 43 | ≤ 0.1 | ≤ 0.015 | ≤ 0.4 | ≤ 0.3 | ≤ 0.03 | 56.14 — 58.5 | ≤ 0.014 |
The third group
Percentage composition of 75GND GOST 10994−74
| Fe | C | Si | Mn | Ni | S | P | Cu | Mn |
|---|---|---|---|---|---|---|---|---|
| ≤ 0.8 | ≤ 0.05 | ≤ 0.5 | 71.6 — 76.5 | 14 — 16 | ≤ 0.02 | ≤ 0.03 | 9.5 — 11 | basis |
Furnizor
We offer to buy alloys with a given TKHR. from specialized warehouses of the supplier Evek GmbH with delivery in any city. Full compliance with international quality standards. The supplier Evek GmbH offers to buy Xie alloys with a given TKHR., the price — optimal.
Buy, bargain price.
We offer Se alloys with a given TKHR., the price — due to technological features of production without the inclusion of additional costs. On the site of the company displays information on the latest arrivals of products. It is possible to order rolled to non-standard parameters. We have the best price-quality ratio for the whole range of products. In the precision alloys segment Evek GmbH is a profitable supplier.