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X6CrNiCuS18-9-2 - Nr.1.4570

Steel with characteristics similar to 303Plus, but with the addition of copper which, in addition to improving machinability on machine tools, also makes it suitable for certain types of cold deformation.

References and Comparable Standards

Standard Reference: EN 10088-3: 2014 (Hot-rolled and bright products)
EUROPE ITALY GERMANY FRANCE UK USA
EN 10088-3: 2005

(UNI 6900:71)

 (DIN 17440-85)

(NF A 35-574-90)

(BS 970 pt. 3 -91)

 AISI
Grade N°   Werkstoff N°      
X6CrNiCuS18-9-2 1.4570 - - - Z8 CNUF 18 - 09 - -

Chemical Composition (Cast Analysis) (%)

C / max Si / max Mn / max P / max S N/ max Cr Cu Mo / max Ni
0,08 1,00 2,00 0,045 0,15÷0,35 0,10 17,0÷19,0 1,40÷1,80 0,60 8,0÷10,0

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** Resistance to intergranular corrosion
in the delivery condition in the welded condition
d≤100 215 185 220 500÷710 35 NO NO

* 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*
d≤10 400 600÷950 15
10<d≤16 400 600÷950 15
16<d≤40 185 500÷910 20
40<d≤63 185 500÷910 20
63<d≤100 185 500÷710 35

* 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

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

Working Temperatures Recommended

Operation °C
Hot forgings deformation 900÷1150
Solution annealing (water, air)    1020÷1100
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1.4435
Rodinox® for Coils Rodinox® Plus for Bars
Rodinox® for Coils Rodinox® Plus for Bars

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