1.4361, X1CrNiSi18-15-4, AISI 306 / F46 grade - austenitic stainless steel according to EN 10088-1.
Table of content:
| Standard | Grade | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical composition % | |||||||||||||||
| C: | Si: | Mn: | P: | S: | Cr: | Mo: | Nb: | Ni: | Cu: | N: | |||||
| EN | 1.4361 - X1CrNiSi18-15-4 | ||||||||||||||
| <0.015 | 3.7 - 4.5 | <2.0 | <0.025 | <0.01 | 16.5 - 18.5 | <0.2 | - | 14.0 - 16.0 | - | <0.11 | |||||
| ASTM | AISI 306 - grade F46 - UNS S30600 | ||||||||||||||
| <0.018 | 3.7 - 4.3 | <2.0 | <0.02 | <0.02 | 17.0 - 18.5 | <0.2 | - | 14.0 - 15.5 | <0.5 | - | |||||
| NF | Z1CNS17-15 | ||||||||||||||
| <0.015 | 3.6 - 4.6 | <2.0 | <0.02 | <0.01 | 16.5 - 18.0 | <0.4 | <0.2 | 13.5 - 16.0 | - | - | |||||
| MSZ | KO43ELC | ||||||||||||||
| <0.02 | 3.7 - 4.3 | <1.0 | <0.02 | <0.02 | 16.5 - 18.5 | <0.2 | - | 14.0 - 15.5 | - | - | |||||
| KS | XM15J1 | ||||||||||||||
| <0.08 | 3.0 - 5.0 | <2.0 | <0.045 | <0.03 | 15.0 - 20.0 | - | - | 11.5 - 15.0 | - | - | |||||
1.4361, X1CrNiSi18-15-4 – description
1.4361 is used for parts exposed to hot, concentrated nitric acid or sulfuric acid. Resistant to intergranular corrosion, which develops particularly in very concentrated (above 90%) nitric environments up to boiling point, also in the presence of oxidising ions.
We recommend to weld using TIG or MIG technique. One of the suitable filler metals is Soudinox S1. Post-weld heat treatment is not required, but recommended, especially for heavy-duty applications. Pickling is, however, required, preceded by immediate passivation. The alloy belongs to the welding group 8.1
Physical and mechanical properties
1.4361 - general physical and mechanical properties:
- In ambient temperature:
- Density: 7.7 g/cm3
- Thermal conductivity: 14 W/(m*K)
- Young's modulus E: 200 GPa
- Linear expansion coefficient: 16.5 (10-6/K)
- Testing temperature: 100°C:
- Young's modulus E: 194 GPa
- Testing temperature: 200°C:
- Young's modulus E: 186 GPa
- Testing temperature: 300°C:
- Young's modulus E: 179 GPa
- Testing temperature: 400°C:
- Young's modulus E: 172 GPa
- Testing temperature: 500°C:
- Young's modulus E: 165 GPa
1.4361 mechanical properties in hot rolled and solution annealed condition (+AT):
- Forgings:
- General parameters:
- Yield strength Re: > 220 MPa
- Tensile strength Rm: 530-730 MPa
- Elongation A: > 40 %
- Hardness HB: < 230
- Longitudial test pieces:
- Impact energy KV. 20°С: > 100 J
- Transverse test pieces:
- Impact energy KV. 20°С: > 60 J
- General parameters:
Below You will find the performance in high temperature tests. The minimum guaranteed values for yield strength refer to 1.4361, while minimum values for tensile strength and elongation refer to URANUS® S1 alloy.
- Testing temperature: 100°C:
- Yield strength Re: > 185 MPa
- Tensile strength Rm: > 540 MPa
- Elongation A: > 45% %
- Testing temperature: 150°C:
- Yield strength Re: > 160 MPa
- Elongation A: > 45% %
- Testing temperature: 200°C:
- Yield strength Re: > 145 MPa
- Tensile strength Rm: > 490 MPa
- Elongation A: > 45% %
- Testing temperature: 250°C:
- Yield strength Re: > 135 MPa
- Elongation A: > 45% %
- Testing temperature: 300°C:
- Yield strength Re: > 125 MPa
- Tensile strength Rm: > 420 MPa
- Elongation A: > 40 %
- Testing temperature: 350°C:
- Yield strength Re: > 120 MPa
- Testing temperature: 400°C:
- Yield strength Re: > 115 MPa
- Tensile strength Rm: > 150 MPa
- Elongation A: > 40 %
Heat treatment and working
Recommended working and heat treatment parameters for X1CrNiSi18-15-4 alloy:
- Forging: 1150-850 °C
- Rolling: 1150-850 °C
- Solutioning: 1100-1160 °C
We deliver this steel alloy as:
- Rods
- Sheets
- Tubes
Replacements, equivalents and other designations:
1.4361, 1.4884, X1CrNiSi18-15-4, URANUS S1 USINOR, Z1CNS17-15, KO43ELC, STSXM15J1, A182, A480, S30600, Coracid 4361