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Views: 0 Author: Ruiyang company Publish Time: 2022-02-09 Origin: SHAANXI RUIYANG IMPORT AND EXPORT CO.,LTD
NH25-20 Designation corresponding grade 1.4848.HK40,SCH22
Centrifugal Casting 1.4848 Steel tube usually as furnace tube,NH25-20 are working at high temperature environment on average: 650° C-950° C. A small amount of ferrite in the metal structure of NH25-20,which with good oxidation resistance and weak thermal shock resistance.As furnace tube when temperature under 950° C,as furnace structure parts when temperature under 1150° C
Therefore most of NH25-20 are used for indirect heating to furnace like CAL (continuous annealing line). Similarly CGL (continuous galvanizing line).
NH25-20chemical components in centrifugal casting tube and elbows as below:
| NH25-20 in centrifugal casting tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| Designation | Corresponding grade | Similar grade | ||||||
| HG/T | DIN/EN | ASTM | JIS | S+C | Manoir | Kubota | ||
| NH25-20 | ZG40Cr25Ni20Si2 | GX40CrNiSi-25-20 | 1.4848 | HK40 | SCH22 | G/CA4848 | Manaurite20 | HK40 |
| NH25-20 chemical components | ||||||||
| C | Si | Mn | S | P | Ni | Cr | Mo | W |
| 0.35-0.45 | 1.75max | 1.5max | 0.04 | 0.04 | 19-22 | 23-27 | 0.5max | |
| TS Rm Mpa at R.T | YS R0.2 At RT | A At Rt | TS at H.T 900 | YS at H.T900 | ||||
| 440 | 240 | 10 | 142 | 90 | ||||
| NH25-20 Melting temperature | SST | 1315 | Density of NH25-20 | 7.75KG/dm3 | Coefficient of expansion:20-800° C | 18.2 | ||
| L.S.T | 1390 | As cast hardness HB | 180 | Modulus of Elasticity 800° C | 133 | |||
NH25-20 as products form usually as below:
Furnace tube sections
Furnace roller and furnace parts
Flanges and fittings
Radiant tube and radiant tube coils
Elbows
NH25-20 in stainless steel as SS310,Could be bars,pipes,plate,sheet,wire,fasteners,pipe fittings and related products.
Welcome contact us for NH25-20 tube and centrifugal casting tubes,welded as radiant tube,radiant coils inquiry and order.
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