Material Grade
Material Grade
Zhongrui raw materials used in productions  are from the most reliable steel mills.
 
Austenitic Stainless Steels  
This type of grades covers the biggest part of Stainless Steel grades. What defines this grades is a chromnium percentaje over 15%  They are resistant to different types of corrosion caused by chemical influences. One specific type of Austenitic Stainless Steel grades are the Heatresistant stainless steel grades  which maintain their mechanical properties when exposed to elevated temperatures. 

Duplex-Superduplex 
Austenitic-ferritic stainless steels(duplex steels) are characterised by comparatively lower presence of nickel compared to standard austenitic grades. Their main feature are the mechanical qualities, particularly their high stress corrosion cracking resistance. They are especially suitable for off shore applications and in the chemical industry. 

Austenitic Stainless Steel  

UNS

ASTM

EN no.

S30400/S30403

304/304L

1.4301/1.4307

S31603

316L

1.4404

S31635

316Ti

1.4571

S32100

321

1.4541

S34700

347

1.4550

S31008

310S

1.4845

N08904

904L

1.4539

Duplex& Super Duplex

UNS

ASTM

EN no.

S32750

 ---

1.4410

S31803

 ---

1.4462

S32205

 ---

1.4462

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