What does A4-80 mean?
The “80” denotes the minimum tensile strength to be met by the material (actually the bolt, screw or nut after manufacture). Therefore, A4-80 is an austenitic, acid proof stainless grade (usually 316 material – 316 or 316L) which has been cold worked to provide a minimum tensile strength of 800N/mm² (MPa).
Do stainless steel bolts have a grade?
303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. They are corrosion-resistant and durable. They are often used in marine applications in freshwater environments but will not work as effectively in a salt-water environment as 316 stainless.
Are DIN and EN standards same?
DIN standards are still valid for products having no ISO or EN standards. According to the task and aim of the ISO founded in 1946, international standards (ISO) are supposed to standardize technical regulations worldwide and make it easier to exchange goods and reduce trade barriers.
What is the difference between A4 and A4-80 stainless steel?
A4 has a higher resistance to corrosion than A2. A4-80 and A2-80 have an ’80’ on the end to indicate the Minimum Tensile Strength (N/mm²). For example A4-80 must have a minimum tensile of 800 N/mm² and A2-80 would be the same (800 N/mm²).
Is A4 316 or 316L?
A4 Stainless is often referred to as 316 or 18/10 stainless. As in A2 above, the numbers 18/10 refer to the chromium and nickel content- 18% chromium and 10% nickel.
Is A4 70 the same as 316?
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).
What is the strongest grade of bolt?
Grade 9 Bolts Grade 9 structural bolts, also known as grade 9 hex cap screws, are one the strongest structural bolts that can be used today. While the typical grade 8 bolt has a tensile strength of 150,000 PSI, a grade 9 bolt has a tensile strength of 180,000PSI.
What does DIN EN mean?
DIN, ISO and EN refer to issuing body. DIN = Deutsches Institut fur Normung (German Institute for Standardisation) ISO = International Standardization Organization (also means “equal” in greek) EN = Europaische Norm (European standard)