What is EN 1.4318 / 301LN Stainless Steel?
EN 1.4318 stainless steel, also known as 301LN or X2CrNiN18-7, is a low-carbon, nitrogen-alloyed austenitic stainless steel. It offers an excellent combination of high strength, good ductility, and superior weldability, making it ideal for automotive components, railway structures, and load-bearing welded parts.
301LN is part of the AISI 301 family but enhanced with nitrogen (N) and reduced carbon (C) content. The nitrogen boosts strength and improves austenite stability, while low carbon enhances resistance to intergranular corrosion.
en 1.4318 stainless steel Similar grades:
| GB |
ASTM |
JIS |
| S30153 |
301LN |
SUS301LN |
| UNS |
DIN |
DIN |
| S30153 |
1.4318/X2CrNiN18-7 |
1.4318/X2CrNiN18-7 |
en 1.4318 stainless steel chemical composition:
| C |
Si |
Mn |
P |
S |
Cr |
| ≤0.30 |
≤1.00 |
≤2.00 |
≤0.045 |
≤ 0.015 |
16.5-18.5 |
| Ni |
Mo |
N |
Cu |
Fe |
Nb |
| 6-8 |
≤ |
0.10-0.20 |
≤ |
~ |
≤ |
| B |
Ti： |
Al |
V |
W |
Ce |
| ≤ |
≤ |
≤ |
≤ |
~ |
~ |
en 1.4318 stainless steel physical properties:
| Melting point/℃ |
Specific heat capacity/kg/(kg.k)℃100~900℃ |
Thermal conductivity/w/(m.k)100~500℃ |
Linear expansion coefficient/(10-6/k)100~500℃ |
Resistivity/(Ω.mm2/m)20℃ |
Longitudinal elastic modulus/GPa20℃ |
| |
0.5 |
16.3 |
16-18 |
0.73 |
200 |
| Density g/cm |
Hardness HBW |
Hardness HRB |
magnetic |
|
|
| 7.93 |
187 |
|
|
|
|
en 1.4318 stainless steel mechanical properties:
| Tensile Strength (σb/MPa) |
630 - 830 |
| Yield Strength (σ0.2/MPa) |
≥330 |
| Elongation (δ5≥, %) |
45.0 |
| Reduction of Area (ψ≥, %) |
- |
| Impact Strength (Akv≥, J) |
90 |
| Hardness (HBS30) |
- |
| High Temperature Yield Strength (σ0.2/MPa) at 100°C |
≥265 |
| High Temperature Yield Strength (σ0.2/MPa) at 200°C |
≥185 |
| High Temperature Yield Strength (σ0.2/MPa) at 300°C |
≥170 |
What is the standard for 1.4318 stainless steel?
| Grade : |
X2CrNiN18-7 |
| Number: |
1.4318 |
| Classification: |
Austenitic stainless steel |
| Density: |
7.9 g/cm ³ |
| Standard: |
| EN 10088-2: 2005 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes |
| EN 10028-7: 2007 Flat products made of steels for pressure purposes. Stainless steels |
| EN 10296-2: 2005 Welded circular steel tubes for mechanical and general engineering purposes. Stainless steel. Technical delivery conditions |
| EN 10088-1: 2005 Stainless steels. List of stainless steels |
| EN 10088-4: 2009 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes |
|
EN 1.4318 stainless steel Price Reference (2025, China)
| Product Type |
Size |
Surface |
Price (USD/ton) |
| Cold Rolled Coil |
1.0 mm × 1219 mm |
2B |
$2,700 – $3,100 |
| Precision Strip |
0.5 mm × 300 mm |
BA |
$2,850 – $3,300 |
| Welded Pipe |
Ø25.4 × 1.2 mm |
Pickled |
$3,400 – $3,900 |
| Wire Rod |
Ø2.0 mm |
Bright |
$3,500 – $4,200 |
We offer 301ln in standard product forms including tubes, pipes, plates, strips, sheets, round bars, flat bars, forgings, hexagonal bars and wires. These products are available in a wide variety of sizes. For detailed specifications and product information, please visit the following website.
GNEE is a professional supplier of austenitic stainless steel, super austenitic stainless steel, duplex steel, super duplex steel and other materials. At present, the total investment is RMB 30 million, the plant area is more than 35,000 square meters, and the number of employees is more than 200. It has internationally advanced high-precision production equipment and first-class processing technology. The product implementation standards include: national standard, American standard, Japanese standard, German standard, European standard, Russian standard, etc. At the same time, non-standard products can be customized according to customer requirements.
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