Products
X8CrNiS18-9 Steel - Nr.1.4305
Machinable Chromium-Nickel Austenitic Stainless Steel
Chromium-nickel austenitic stainless steel with the addition of sulfur, which improves machinability by chip removal with machine tools, reducing however the resistance to corrosion in aggressive environments. The special “Plus” processing allows performances to be further improved during machining in terms of surface finish, tool life and machine productivity.
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° | ||||
| X8CrNiS18-9 | 1.4305 | X10CrNiS1809 | X8CrNiS18-09 | 1.4305 | Z8CNF18-09 | 303S31 | AISI 303 |
Chemical Composition (Cast Analysis) (%)
| C / max | Si / max | Mn / max | P / max | S | N/ max | Cr | Cu / max | Ni |
|---|---|---|---|---|---|---|---|---|
| 0,10 | 1,00 | 2,00 | 0,045 | 0,15÷0,35 | 0,10 | 17,0÷19,0 | 1,00 | 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 | 230 | 190 | 225 | 500÷750 | 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. |
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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 | 190 | 500÷850 | 20 |
| 40<d≤63 | 190 | 500÷850 | 20 |
| 63<d≤100 | 190 | 500÷750 | 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 |
| +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. | ||
Working Temperatures Recommended
| Operation | °C |
|---|---|
| Hot forgings deformation | 900÷1200 |
| Solution annealing (water, air) | 1000÷1100 |
