Specifications

1.UN23(SAF2304) stainless steel
2.duplex stainless steel-Low alloy type
3.00Cr23Ni4N
4.American standard for UNS S32304

high quality UN23(SAF2304) stainless steel  

 

2304 stainless steel (China brand: 00 cr23ni4n) was developed by Swedish a duplex stainless steel, low alloy solid solution treatment temperature of 1000 °C or so, it has 40% 50% ferrite and austenite by between 50% and 60%, has the common characteristics of duplex stainless steel, as a has the characteristics of high strength and low price, can take the place of 304 l and 316 l austenitic stainless steel is commonly used and the development of steel grades.

 

It has been the American association of mechanical engineering (ASME) confirmed that can be used for boiler and pressure vessel, chemical plants and oil refineries, pipeline, many countries have been incorporated into the standard. American standard for UNS S32304, Sweden's commercial brand for SAF 2304.  

 

Duplex stainless steel in general can be divided into low alloy, the alloy and high alloy and super duplex stainless steel four categories.

 

Model  country	China	the United States	Sweden	Germany	France	Japanese
Low alloy type	00Cr23Ni4N	UN23 (SAF2304)	SS232 (SAF2304)	W.Nr.1.4362	UR35N	DP11
In the alloy	00Cr18Ni5Mo3Si2 00Cr22Ni5Mo3N	UNS S31500 UNS S31803	SS2376(3RE60) SS2377(SAF2205)	W.Nr.1.4417 W.Nr.1.4462	UR45N	DP1 DP8
High alloy type	0Cr25Ni5Mo2 00Cr25Ni7Mo3WCuN	UNS S32900 UNS S31260	SS2324(10RE51)	W.Nr.1.4460 W.Nr.1.4501		329J1 329J2L
The dual phase steel	00Cr25Ni7Mo4N 00Cr25Ni6Mo3CuN	UNS S32750 UNS S32550	SS2328(SAF2507)	W.Nr.1.4410 W.Nr.1.4507		UR47N+ UR52N+

 

 chemical component:

UNS 2304 grade C ≤ 0.030 , Si ≤ 1.0 , Mn ≤ 2.5 , S ≤ 0.030 , P ≤ 0.040 , Cr: 21.5 - 24.5 , Ni: 3.0 - 5.5 , Mo: 0.05 - 0.6 ,N: 0.05 - 0.20 , Cu:0.05 - 0.6