TIS 244.1-3-1977 Standard methods of test for iron and steel.part Ⅰ: vickers hardness test for steel.part Ⅱ: brinell hardness test for steel and cast iron.part Ⅲ: rockwell hardness test for steel (b and c scales)
1977TIS 244.1-3-1977 Standard methods of test for iron and steel.part Ⅰ: vickers hardness test for steel.part Ⅱ: brinell hardness test for steel and cast iron.part Ⅲ: rockwell hardness test for steel (b and c scales)