What does A2-70 mean on a screw?
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.
What is an A2 grade bolt?
A2. A type of the most common stainless steel grade. It is comparable in strength to grade 2 materials, yet slightly weaker and easy to weld. This grade is always metric. The ASTM denotation for very similar grade is 304.
What is the difference between A2-70 and A2 80?
The A2-70 has 700MPa minimum tensile strength and the A4-80 has 800MPa minimum tensile strength as well. Both the materials have good temperature resistance up to 870 degrees Celsius.
What does A4-70 mean on a bolt?
Grade A4-70 Bolts, Screws & Nut. A4-70 Stainless Steel Fastener is recognized by 2 ways, A2 which describe it as being from SS 316 family and 70 which classifies its strength. When we say A4-70 it generally means that the bolt / screw is from SS 316 grade and has an ultimate tensile strength as 70 kg or 700 n/mm2.
Is A2-70 strong?
As Can Be Seen : A2-70 Stainless Exceeds Ordinary Low Grade Steels For Strength. Though It Is Weaker Than 8:8 Heat Treated Steels, Which Are Quite Commonplace.
What size bolt is A2-70?
Manufacturer of A2 70 Bolt Material according to standard, Check A2-70 Bolt Size Chart
| Product name | A2-70 Stainless Steel Bolts |
|---|---|
| Surface treatment | Passivation /plain |
| A2-70 Stainless Steel Bolts Size | M2 – M100 |
| A2-70 Stainless Steel Bolts Diameter | M3-M60 |
| A2-70 Stainless Steel Bolts Length | 6mm-500mm |
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.
How strong is a A2-70 bolt?
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 is stronger A2 or A4?
A2 vs A4 stainless steel strength Whereas grade A4 is stronger than grade A2, and its tensile properties are almost similar to alloy steel grade 8.8.
What is a Class 70 bolt?
The “70” denotes the minimum tensile strength to be met by the material (actually the bolt, screw or nut after manufacture). Therefore, A4-70 is an austenitic, acid proof stainless grade (usually 316 material – 316 or 316L) which has been cold worked to provide a nimimum tensile strength of 700N/mm² (MPa).
Is A4-70 the?
A4 Stainless Steel Fasteners Chemical Composition (SS grade 316)
| Fasteners Grade | Cr | |
|---|---|---|
| ISO | Maximum | 18.5 |
| A4-70 | Minimum | 16.0 |
| ISO² | Maximum | 18.5 |
| 316 | Minimum | 16.0 |
Is A2 or A4 stainless stronger?
What do you need to know about a2-70 stainless steel?
A2-70 1 A2-70. DIN ES ISO 3506-1: 1997 specifies the mechanical properties of bolts, screws and nuts made of austenitic (amongst others) stainless steels, when tested over an ambient temperature range of 2 Background. 3 Chemical Composition. 4 Mechanical Properties. 5 Physical Properties.
What kind of steel is used in A2 70 head bolts?
The material used for this class of steel bolts is the 304 austenitic stainless steel. The Stainless Steel Bolt Grade A2-70 is cost effective, strong, hard and general corrosion resistant as well. The size of the bolts range from ¼ inches to 24 inches and these bolts are used in different application needs.
Which is the minimum tensile strength of a2-70?
The “70” denotes the minimum tensile strength to be met by the material (actually the bolt, screw or nut after manufacture). 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/mm ² (MPa).
What does property class 50 mean on fasteners?
Property class 50 represents the steel in the annealed condition. The most common & readily available supply condition is property class 70, which represents a “cold drawn” for the bar stock from which the fasteners are made. Property class 80 is based on severely hard cold drawn bar.