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ISO 3506-1 Grade A2-70
ISO 3506-1 A2-70 Stainless Steel Bolts — Reliable Fastening for Industrial Applications
The flexibility, strength, and durability of ISO 3506-1 A2-70 stainless steel bolts make them suitable for use in various industries. These bolts are perfect for applications where the reliability of the fastening is of utmost importance, such as in construction, automotive, marine, and industrial applications.
At Bigboltnut, we offer quality A2-70 stainless steel bolts that meet all international specifications to assure long-term performance in many applications.
Understanding ISO 3506-1 A2-70 Bolts
According to the standard of ISO 3506-1, the rating of the corrosion-resistant stainless steel fasteners is termed ISO 3506-1 A2-70. A2 usually The A2 designation denotes austenitic stainless steel, usually 304-grade, and the 70 implies a minimum tensile strength of 700 MPa.
This combination makes them corrosion-resistant, even in harsh environments.
A2-70 material properties:
The following qualities make A2-70 stainless steel particularly useful for industrial usage:
- Composition: The material primarily consists of 18% Cr and 8% Ni and contains trace quantities of carbon, manganese, and silicon.
- Corrosion resistant: These fasteners are great for use in the outdoors and the sea because of their high chromium content that prevents rust and oxidation.
- Strength and Longevity: A tensile strength of at least 700 MPa ensures that these bolts provide adequate resistance to high levels of stress without compromising their integrity.
- High-Temperature Resistance: Suitable for industrial applications, as it does fairly well for extremely high temperatures.
A2-70 Bolt Mechanical Properties
The primary mechanical characteristics of A2-70 bolts include:
- Minimum tensile strength: 700 MPa
- Yield strength: 450 MPa about
- Ranges in hardness between 95 and 215 HB (Brinell Hardness).
- Elongation: minimum of 50%
These mechanical characteristics taken together make A2-70 bolts a reliable choice for structural and load-bearing uses.
A2-70 Bolt Yield Strength
A2-70 bolt grade can withstand high loads before irreversible deformation due to its yield strength of 450 MPa. To satisfy ISO 3506-1 criteria, these bolts come in various sizes, thread types, and surface finishes.
A2-70 Material Equivalent:
A2-70 stainless steel material has equivalence to several international grades as follows:
- AISI 304 (USA)
- X5CrNi18-10 Germany
- 1.4301 European standard
- UNS S30400
Applications of ISO 3506-1 A270 bolts in construction and Other Industries
Typical applications include:
- Structural fastening is used in buildings and bridges
- Machinery and equipment assembly
- Marine and offshore installations
- Chemical processing plants
- Automotive and Aerospace
ISO 3506-1 A270 stainless steel bolt properties:
Selecting A2-70 stainless steel bolts presents several advantages, including:
- High resistance to corrosion and oxidation
- Excellent mechanical strength and toughness
- Readily available in a wide variety of sizes and specifications
- Suitable for either indoor or outdoor applications
- Meets international standards.
At Bigboltnut, we ensure that all our A2-70 bolts meet stringent quality control criteria so that customers can be assured of reliable, high-performance fasteners for a wide range of industrial applications.
Garde A2-70 Bolts, Screws & Nut
A2-70 Stainless Steel Fastener is recognized by 2 ways, A2 which describe it as being from SS 304 family and 70 which classifies its strength. When we say A2-70 it generally means that the bolt / screw is from SS 304 grade and has an ultimate tensile strength as 70 kg or 700 n/mm2.
| A2-70 |  |
Hex bolts, screws, stud bolts, double ended studs, full thread rods, full threaded studs |
|
Steel Group |
Steel Grade |
Chemical composition |
||||||||
|
mass fraction, % (maxima unless stated)) |
||||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
||
|
Austenitic |
A1 |
0.12 |
1 |
6.5 |
0.2 |
0.15 to 0.35 |
16 to 19 |
0.7 |
5 to 10 |
1.75 to 2.25 |
|
A2 |
0.10 |
1 |
2 |
0.05 |
0.03 |
15 to 20 |
- |
8 to 19 |
4 |
|
|
A3 |
0.08 |
1 |
2 |
0.045 |
0.03 |
17 to 19 |
- |
9 to 12 |
1 |
|
|
A4 |
0.08 |
1 |
2 |
0.045 |
0.03 |
16 to 18.5 |
2 to 3 |
10 to 15 |
4 |
|
|
A5 |
0.08 |
1 |
2 |
0.045 |
0.03 |
16 to 18.5 |
2 to 3 |
10.5 to 14 |
1 |
|
|
Steel Group |
Steel Grade |
Property Class |
TensileStrengthRma min. Mpa |
Stress at 0.2 % permanent strain Rp0.2a min. Mpa |
Elongation after fracture Ab min. mm |
|
Austenitic |
A1, A2 |
50 |
500 |
210 |
0.6d |
|
A3, A4 |
70 |
700 |
450 |
0.4d |
|
|
A5 |
80 |
800 |
600 |
0.3d |