In mild steel ( IS2060) or SA 516 Gr.70 sometimes material
becoming more hard that cant bear more tensile or
bend test. there happining cracks problem . Why?
2007-04-04 04:09:07 · 5 answers · asked by Nana 1 in Science & Mathematics ➔ Engineering
Problem with annealing or strain hardening. Hardness can be checked using a Brinell hardness tester or Rockwell Hardness tester.
If you are in India, I can probably help you.
2007-04-04 04:16:42 · answer #1 · answered by Swamy 7 · 2⤊ 0⤋
Mild Steel / ASTM A36 will range in hardness from 119 - 159 Brinell or 67 - 83 Rockwell B. Hope that helps.
2016-05-17 05:10:03 · answer #2 · answered by ? 3 · 0⤊ 0⤋
If all you need to test is the steel's hardness, for a simple approach you need a set of materials to do scratch tests. From a long time ago, I remember that diamond has a hardness of 10, corundum is 9, etc. down to talc, which is 1. A hobby shop with a science department should have (or should be able to order) a set of all but the diamond. Another possibility is the mineralogy department of a university.
2007-04-04 04:21:17 · answer #3 · answered by TitoBob 7 · 1⤊ 0⤋
Specific manufacturing controls are used for surface preparation, chemical composition, rolling and heating processes. All these processes develop a supreme quality product that are suited to fabrication processes such as welding, forging, drilling, machining, cold drawing and heat treating.
2014-04-11 19:44:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋
use Brinell or Vicker hardness testing machine.
2007-04-04 23:38:38 · answer #5 · answered by harish 1 · 1⤊ 0⤋