A grade 2 washer typically has a hardness ranging from 80-100 Brinell. This hardness level makes it suitable for general-purpose applications where high strength is not required.
A bolt with hardness Rc 27-34 falls under the Grade 5 category. Grade 5 bolts are medium carbon steel that is quenched and tempered for increased strength and hardness. They are commonly used in automotive and general engineering applications.
Copper with a purity of 99,99 %.
Copper rich ores contain Relatively large amount of copper. Copper obtained from rich ores is from better quality than low-grade ores. A low-grade ore doesn't contain very high proportion of valuable copper
Inconel typically has a Rockwell C (RC) hardness of around 20-35, depending on the specific grade and heat treatment.
A grade 2 washer typically has a hardness ranging from 80-100 Brinell. This hardness level makes it suitable for general-purpose applications where high strength is not required.
The Rockwell C Hardness for a grade 10.9 fastener is 32 - 39HRC or 320 - 380Hv10
yes
Hardness
A grade 5 hardness bolt is a bolt made of medium carbon steel and depending on the manufacturer can either be or not heat treated.
27 to 36
A bolt with hardness Rc 27-34 falls under the Grade 5 category. Grade 5 bolts are medium carbon steel that is quenched and tempered for increased strength and hardness. They are commonly used in automotive and general engineering applications.
Grade 10.9 bolts or capscrews have a minimum tensile strength of 1040N/mm2 and a hardness of 320 - 380Hv10. Grade 12.9 bolts or capscrews have a minimum tensile strength of 1220N/mm2 and a hardness of 385 - 435Hv10. The 12.9 fastener is therefore a higher grade (hardness and tensile strength) fastener compared with 10.9 grade
Copper with a purity of 99,99 %.
It is nothing but the ETP, Electrolytic Tough Pitch, Copper misspelled as Electrolytic Copper!
Low-grade copper ore contains a small amount of copper (1% or lower) and a big amount of waste rock. The problem with low-grade copper is that it breaks down and melts more easily than copper ore.
Copper rich ores contain Relatively large amount of copper. Copper obtained from rich ores is from better quality than low-grade ores. A low-grade ore doesn't contain very high proportion of valuable copper