Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of x55crmnnin20-8 valve steel 1.4875 in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
X55CrMnNiN20-8 (1.4875) Valve Steel EN 10090 Certified
X55CrMnNiN20-8 (Material No. 1.4875) is austenitic heat-resistant valve steel conforming to EN 10090:1998. It features excellent high-temperature strength, oxidation resistance, and corrosion resistance, making it ideal for automotive engine valves, power plant components, and chemical equipment.
| Grade : | X55CrMnNiN20-8 | |
| Number: | 1.4875 | |
| Classification: | Austenitic steel | |
| Density: | 7.8 g/cm ³ | |
| Standard: |
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| Equivalent grades: | No information |
Chemical composition % of steel X55CrMnNiN20-8 (1.4875): EN 10090-1998
| C | Si | Mn | Ni | P | S | Cr | N |
| 0.5 - 0.6 | max 0.25 | 7 - 10 | 1.5 - 2.75 | max 0.045 | max 0.03 | 19.5 - 21.5 | 0.2 - 0.4 |
|
Material |
ASTM EV8 |
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|
Chemical Composition |
Mechanical Properties(In Quenched & Tempered State) 565 °C |
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|
C |
0.48-0.58 |
Tensile strength(MPA) |
560 |
|
Si |
<0.35 |
Yield strength (MPA) |
885 |
|
Mn |
8.00-10.00 |
Elongation(δ5/%) |
8 |
|
Cr |
20.00-22.00 |
Reduction in Area (ψ/%) |
- |
|
Mo |
- |
Impact (J) |
-- |
|
P |
≤0.035 |
Hardness |
>302 |
|
S |
≤0..030 |
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|
N |
0.35-0.50 |
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|
Ni |
3.25-4.50 |
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Heat treatment conditions
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4 1.4718 and1.4871 valvle steel chemical composition below
| DIN | W.Nr | BS | JIS | SAE | IS |
|---|---|---|---|---|---|
| X45CrSi9-3 | 1.4718 | EN-52 | SUH-1 | HNV-3 | X45Cr9Si3 |
| - | - | - | SUH-11 | - | X50Cr9Si2 |
| X40CrSiMo10-2 | 1.4731 | - | SUH-3 | HNV-1 | X40Cr11Si2Mo1 |
| X85CrMoV18-2 | 1.4748 | - | - | - | - |
| X55CrMnNiN20-8 | 1.4875 | 21-2N | - | EV-12 | X55Cr21Mn8Ni2N |
| X53CrMnNiN21-9 | 1.4871 | 21-4N | SUH-35 | EV-8 | X53Cr22Mn9Ni4N |
| - | - | 21-12N | SUH-37 | EV-4 | X20Cr21Ni12N |
| X50CrMnNiNbN21-9 | 1.4882 | 21-43N | - | - | - |
| X33CrNiMnN23-8 | 1.4866 | 23-8N | - | EV-16 | X33Cr23Ni8Mn3N |
| NiCr16Fe7TiAl Inconel 751 | 2.4694 | - | SUH-751 | J-775 | - |
jis SUH 1 valve steel x45cr9si3 valvle steel bar 4cr9si2 from factory
Our company
Sichuan Liaofu Special Steel Company.,Ltd was established in 2001, specialized in special steel production and inventory as the main business. In 2004, our company Chairman Mr.Mike Guo purchased a batch of advanced equipment for the production of hot rolled and forged products.After several years of development, our company has gradually formed a complete production and operation system of smelting, refining, forging , heat treatment. Meanwhile we began to expand overseas markets and Obtained the national export license and the customs certificate since 2005. In 2007, we concluded the first export order. For satisfying customers' extensive demands,We have set up a sales department for rare metals such as titanium and copper in 2009.
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