Grade 205 Stainless Steel — UNS S20500 / AISI 205 Supplier & Manufacturer

Grade 205 stainless steel (UNS S20500 / AISI 205) is a high-manganese austenitic alloy offering up to 30% higher yield strength than standard 304 — making it the preferred choice for structural, food processing, and chemical industry applications where both strength and corrosion resistance are non-negotiable. Ambica Steels manufactures and exports Grade 205 in round bars, hex bars, flat bars, wires, and billets from New Delhi, India to 75+ countries worldwide.

About Grade 205 Stainless Steel

Grade 205 stainless steel is a high-strength, corrosion-resistant, high-temperature-bearing stainless steel. All these features make it ideal for various applications. Its special chemical composition provides it with many useful properties.  It is often used in applications like construction and machinery.

AISI 205 Chemical Composition

AISI 205 grade has a definite composition, making it suitable for various applications. Iron is the key element of AISI 205, accounting for about 70 per cent of the alloy. Chromium comes in as the second principal component enhancing its corrosion resistance, apart from making it shinier. Other than iron and chromium, AISI 205 contains traces of other elements, including nickel and carbon. Nickel is added to provide strength and durability, while carbon increases the hardness.

Iron, Fe

Balance

Chromium, Cr

16.5-18.0%

Manganese, Mn

14.0-15.5%

Nickel, Ni

1.0-1.75%

Silicon, Si

1%

Nitrogen, N

0.32-0.40%

Carbon, C

0.12-0.25%

Phosphorous, P

0.06%

Sulfur, S

0.03%

 

Physical Properties of Grade 205 Stainless Steel

UNS S20500 is known for its good strength and flexibility making it highly durable and mouldable. It's not too hard and so can be cut easily, drilled, or shaped in different shapes and forms. Grade 205 stainless steel can also be welded using the TIG and MIG techniques without taking any specific precautions. Let us look at the physical properties of Stainless steel 205

Density

7.80 g/cc

 

Mechanical Properties of Grade 205 Stainless Steel

Grade 205 stainless steel has desirable mechanical properties. It is hard and resistant to most forms of corrosion. It is also very durable and long-lasting. It can be easily shaped and joined and hence is suitable for several applications. Below are some of the mechanical properties of grade 205.

Tensile strength

790 – 830 MPa

Yield strength (@strain 0.200 %)

450 – 475 MPa

Elastic modulus

197 GPa

Poisson’s ratio

0.27-0.30

Elongation at break

40%

Hardness, Rockwell B

100

 

Thermal Properties of Grade 205 Stainless Steel

Grade 205 stainless steel has good thermal properties. It can effectively conduct heat. This property makes it useful in applications requiring heat management. It can also dissipate or reflect heat from its surface very fast. In addition, contrary to many other metals, Grade 205 stainless steel does not lose force due to exposure to extremely low temperatures. This makes it a reliable material for applications requiring low temperatures.

Thermal Expansion

17.9

Specific heat

500

 

Application of Grade 205 Stainless Steel

Grade 205 stainless steel is a highly versatile material used in many diverse applications. It is highly corrosion-resistant, can withstand high temperatures, and is easy to clean. Hence, it is widely used in food-related equipment. It also finds its applications in the manufacturing of ovens, braising pans, steamers, and toasters. Besides the kitchen, Grade 205 stainless steel is in high demand in big construction projects.

 

FAQ

Q1. What is the difference between Grade 205 and Grade 304 stainless steel?

Grade 205 offers ~30% higher yield strength than 304 by substituting most nickel with manganese and nitrogen. Corrosion resistance and weldability remain comparable. It is the preferred choice where strength matters more than nickel-level corrosion performance.

Q2. What are the standard specifications for UNS S20500?

Grade 205 is supplied to(bars & shapes) and AMS 5513(sheet/strip/plate). Ambica Steels issues Material Test Certificates per EN 10204 3.1 with every order.

Q3. Is Grade 205 stainless steel weldable?

Yes,TIG and MIG welding work without preheating. For full solution annealing after welding, hold at 1038°C for 30 minutes and rapidly cool.

Q4. What industries use AISI 205 stainless steel?

Food processing equipment, construction & structural, chemical processing, marine & offshore installations, and general engineering fasteners and precision shafts.

Q5. What product forms does Ambica Steels supply in Grade 205?

Round bars, hex bars, square bars, flat bars, hot rolled bars, billets, ingots, fine wire, cold heading wire, TIG wire, and MIG wire — ex-stock from New Delhi

Q6. What is the minimum order quantity (MOQ)?

From 24 metric tonne for standard sizes. Contact dm@ambicasteels.com or +91 11 47034400 for a quote within 24 hours.

Q7. Does Ambica Steels provide material test certificates?

Yes - EN 10204 3.1 MTCs with every shipment. Third-party inspection by SGS, Bureau Veritas, or TÜV available on request. Certified to ISO 9001:2015, AS 9100C, and IATF 16949.