V2A and VA

[J. Stracco]

M-

What is the difference between V2A and VA?

let me know if this is correct:

V2A= 18/10 Nickel/Chromium Stainless
V2A Polished=The same as above, but polished
VA= 18/8 Nickel/Chromium Stainless, dull luster, looks more like cadmium.
-J

[Allan Atherton]

Here is 2-year old reply from Mark about V2A and VA. He said:
VA and V2A are old identification terms for stainless steel. The new terms are A1, A2, A3, A4 and A5, but in general, people are still familiar with the old terms. Basically, V2A = A2 and VA = A1.
A = Austenetic chrome nickel steel.
1 = automatic steel with sulphur content.
2 = cold steel with additional chrome and nickel alloys.
3 = cold steel with additional chrome/nickel alloys, stabilised with Ti, Nb and Ta
4 = cold steel with additional chrome/nickel alloys and molybdenum alloys
5 = cold steel with additional chrome/nickel alloys and molybdenum alloys, stabilised with Ti, Nb and Ta
A stainless steel screw would have a grade stamped on the head (according to ISO 3506) eg. ìA2-70î. This means that it is a Austenetic chrome nickel cold steel with additional chrome and nickel alloys, and has a tensile strength of 700 Nmm2
Stainless steel spring steels have the designations C1; C2; C3; C4, where
C = Martensistic chrome steel.