Products

X2CrNi18-9 - Nr.1.4307

Steel with characteristics similar to 304 but with a limited carbon content, which determines a higher resistance to intercrystalline corrosion and improved weldability. The 304Plus version, in addition to a controlled sulfur content, undergoes a special processing during the steelworks process that further improves machinability by chip removal.

References and Comparable Standards

Standard Reference: EN 10088-3: 2014 (Hot-rolled and bright products) | EN 10263-5: 2017 (Wire rods, bars and wire for cold heading products) EN 10272: 2016 (Stainless steel bars for pressure purposes) P.E.D. 2014/68/EU

EUROPE		ITALY	GERMANY		FRANCE	UK	USA
EN 10088-3: 2005 EN 10263-5: 2001 EN 10272: 2007		(UNI 6900:71)	(DIN 17440-85)		(NF A 35-574-90)	(BS 970 pt. 3 -91)	AISI
Grade	N°		Werkstoff	N°
X2CrNi18-9	1.4307	-	-	-	Z3 CN 19 - 09	304S15	304L

Chemical Composition (Cast Analysis) (%)

C / max	Si / max	Mn / max	P / max	S / max	N/ max	Cr	Ni
0,030	1,00	2,00	0,045	0,030	0,10	17,50÷19,50	8,0÷10,5

Mechanical Properties - Rough Turned (1X) In The Annealed Condition

Size (mm)	Hardness HB max* **	Rp 0,2 (MPa) min	Rp 1 (MPa) min*	Rm (MPa)**	A5 (%) min**	KV (J) min	Resistance to intergranular corrosion
Size (mm)	Hardness HB max* **	Rp 0,2 (MPa) min	Rp 1 (MPa) min*	Rm (MPa)**	A5 (%) min**	KV (J) min	in the delivery condition	in the welded condition
d≤100	215	175	210	500÷700	45	100	YES	YES

* Only for guidance
** The maximum HB values may be raised by 100HB or the tensile strenght value may be raised by 200 MPa and the minimum A% value may be lowered to 20% for bars of ≤35 mm

Mechanical Properties - Cold Drawn (2H, 2B) And Ground Bars (2G) In The Solution Annealed Condition

Size (mm)	Rp 0,2 (MPa) min	Rm (MPa)0	A5 (%) min*	KV (J) min
d≤10	400	600÷930	25	-
10<d≤16	380	600÷930	25	-
16<d≤40	175	500÷830	30	100
40<d≤63	175	500÷830	30	100
63<d≤100	175	500÷700	45	100

* Values valid only for size ≥5 mm

Mechanical Properties - Cold Drawn Wire And Coils (2H)

Tensile strength levels	Rm (MPa)
+C 600	600÷800
+C 700	700÷900
+C 800	800÷1000
+C 900	900÷1100
+C 1000	1000÷1250
+C 1100	1100÷1350
+C 1200	1200÷1450
+C 1400	1400÷1700
+C 1600	1600÷1900

Note: the desired tensile strength level shall be evaluated depending on diameter required

Mechanical Properties - Cold Drawn Wire And Coils In The Solution Annealed Condition (2D)

Size	A (%) max	Rm (MPa) max
0,10≤d≤0,20	20	1050
0,20≤d≤0,50	30	1000
0,50≤d≤1,00	30	950
1,00≤d≤3,00	30	900
3,00≤d≤5,00	35	850
5,00≤d≤16,00	35	800

Note: If skin passed, Rm might be increased by up to 50 MPa

Mechanical Properties - Bars, Wire And Coils For Cold Heading

Size (mm)	As Treated (+AT) or Peeled(+AT+PE)		Cold Drawn (+AT +C)		Cold Drawn + Solution annealed (+AT +C +AT)		Cold Drawn + Solution annealed + Skin passed (+AT +C +AT +LC)
Size (mm)	Rm (MPa) max	Z (%) min	Rm (MPa) max	Z (%) min	Rm (MPa) max	Z (%) min	Rm (MPa) max	Z (%) min
2≤d≤5	-	-	-	-	680	68	730	63
5<d≤10	630	68	800	-	630	68	680	63
10<d≤25	630	68	760	-	630	68	-	-
25<d≤50	630	68	740	-	630	68	-	-