The Mohs Scale of Hardness for Metals
Here is a list of the hardness grades for some of the metals that you are most likely to come across in your everyday life...:
•Lead: 1.5
•Tin: 1.5
•Zinc: 2.5
•Gold: 2.5-3
•Silver: 2.5-3
•Aluminum: 2.5-3
•Copper: 3
•Brass: 3
•Bronze: 3
•Nickel: 4
•Platinum: 4-4.5
•Steel: 4-4.5
•Iron: 4.5
•Palladium: 4.75
•Rhodium: 6
•Titanium: 6
•Hardened steel: 7-8
•Tungsten: 7.5
•Tungsten carbide: 8.5-9
Why It Is Important to Know the Hardness of Metals
When the German geologist Friedrich Mohs devised the scale of hardness that we use today, he used a simple principle to determine the grade for each material: Which materials can scratch it, and which materials it can scratch.
Last edited by lightspree; 05-05-16 at 10:49 AM.