Is A2-70 the same as 304?

Is A2-70 the same as 304?

DIN/ISO A2 Stainless Steel Is A Corrosion Resistant Steel; It Is Also Known As ASTM-304. A Bolt Marked A2-70 Is A 304 Stainless Steel Bolt With A 700 N/mm2 Tensile Strength (See Below Table). The -70 Representing The Tensile Strength Divided By 10.

What grade is an A2-70 bolt?

304 A2 Stainless Steel Fasteners Chemical Composition

Grade		Cr
A2-70	Min	15.0
	Max	20.0
304	Min	18.0
	Max	20.0

Is A2 stainless steel?

Common Properties Both A2 and A4 grades are classed as Austenitic stainless steel (sometimes called the 300 series). This means that they have high chemical resistance but cannot be hardened by heat treatment. They can be hardened by cold working. Both A2 and A4 stainless steels are mostly non-magnetic.

Does A2 stainless rust?

To put it simply, an A2 stainless steel does not rust, but must not come into direct contact with salt. On a boat, it will therefore be used for all the fittings screws or mechanical fasteners.

What is the difference between A2 and A4 stainless steel?

A4 stainless is often used in marine or chemical environments as it has greater corrosion resistance than A2. The chemical composition of both A2 and A4 stainless steel are almost identical with the most notable differences being the higher nickel content and the addition of Molybdenum in A4.

How strong is A2 70?

700N/mm²
Therefore, A2-70 is an austenitic, acid proof stainless grade (usually 304 material – 304 or 304L) which has been cold worked to provide a minimum tensile strength of 700N/mm² (MPa). We stock round bar from 10 mm to 60 mm diameter, and hexagons from 10 mm to 37 mm AF.

What is A2 material?

A2 tool steel is an air hardening, cold work steel. A2 is a 5% Chromium steel which provides high hardness after heat treatment with good dimensional stability. It is heat treatable and will offer a hardness in the range 57-62 HRC.

Is A2 steel stainless?

Common Properties Both A2 and A4 grades are classed as Austenitic stainless steel (sometimes called the 300 series). This means that they have high chemical resistance but cannot be hardened by heat treatment.

What exactly is Grade A2 stainless steel?

A2 stainless steel is often referred to as 304 or 18/8 Stainless. 18/8 actually refers to the amount of chromium and nickel in the alloy – 18% chromium and 8% nickel. A2 (304, 18/8) is an austenitic steel and is non-magnetic. The chromium provides a corrosion and oxidation resistance, however it can tarnish.

What is Grade A2 bolt?

The A2 stainless steel grade bolt has a decent corrosion resistance under normal conditions such as wet surroundings, oxidising and organic acids or alkali and salt solutions. The A4, however, is also called an “acid proof” steel grade, as it is more corrosion resistant than the A2.

What is A2 and A4?

A2 bolts are also known as ASTM 304 or 18-8, while the A4 is also known as a “marine” bolt or ASTM 316. Due to the non-corrosive nature of stainless steel, both types of fasteners are used for many applications, ranging from the automotive and marine industry to architecture and DIY home improvements.