Knowledge

1.4509 stainless steel, a ferritic chromium grade, is equivalent to the AISI 439 and UNS S43940 designations. It is also known by its European designation X2CrTiNb18.

1.4521 stainless steel is equivalent to AISI 444 and the UNS designation S44400. It is also known by its European nominal name, X2CrMoTi18-2.

The terms STS 316 and UNS S31603 refer to the same material, stainless steel grade 316L, which is a low-carbon version of the standard 316 stainless steel.

1.4429 and 1.4404 are both austenitic stainless steels, but 1.4429 has a higher nitrogen content, leading to increased strength and pitting corrosion resistance. 1.4404 is a low-carbon version of 1.44

GNEE offers a wide range of 304, 316, and 321 stainless steel pipe fittings, including elbows, tees, reducers, and flanges, all available in stock at competitive prices for quick delivery.

ASTM A182 is a standard specification for forged or rolled alloy and stainless steel materials, used for manufacturing pipe flanges, forged fittings, valves.

ASTM A269 TP316 is a standard specification for seamless and welded austenitic stainless steel tubing intended for general corrosion-resisting and low- or high-temperature service.

A2 grade stainless steel is also often referred to as type 304 or 18/8 - this latter label denotes the fact that A2 grade stainless steel contains approximately 8% nickel and 18% chromium.

While A4 stainless steel and 316 stainless steel are often used interchangeably, it’s important to note that they are indeed the same material, with different names depending on the standard used. A4

The standard hardness for 1.4310 (AISI 301, X10CrNi18-8) stainless steel rod is typically less than 230 HB (Brinell hardness).

The 1.4305 2B stainless steel plate is a highly corrosion-resistant material, ideal for applications requiring good formability and surface finish, such as kitchenware and decorative elements.

1.4305 (also known as AISI 303) contains a higher percentage of sulfur (0.15-0.35%) to enhance machinability, while 1.4310 (also known as AISI 301) has a lower sulfur content.