"Essentially, the spine of the knife is going to be softer, whereas the edge is going to be treated to a higher hardness."
"Mirror Gloss is a hard polish, and if you compare those two, most who have worked with both will notice that the Mirror Gloss is actually very hard."
"Anything over 60 is considered very hard anything under 57 is considered relatively soft being that they were 58 they are right in the middle."
"The hardest rock on Earth is corundum, the only mineral that will scratch a diamond."
"Hypereutectoid steel: where hardness reigns supreme."
"The molecular structure is unlike anything we've ever seen. It's harder than a diamond."
"Incrementalism makes the heart hard."
"Diamonds are also the hardest rock on the planet."
"Adam and Eve had no clue, but here is the truth: a hard heart brings a hard life."
"...when it comes to getting the final edge, higher hardness can be beneficial."
"You gotta have that balance between hard and soft."
"To reduce interactions, low temperature and high oven time should be selected to have the desired output of high hardness, also called Brenel hardness."
"It's a hardness, and I'm enormously grateful for them."
"Pride makes the heart hard, like a stone."
"Can diamonds be scratched? Yes, by other diamonds."
"There is a point of no return, when hearts become irreparably hardened."
"Maple is extremely hard to stain."
"Because nothing small is making a dent in that hardened heart."
"It's just cosmetically awesome, right? Looks good, but it also imparts a beautiful hardness on the surface."
"The ceramic is extremely hard now and can only be worked with diamond tools."
"So, hardness is essentially um the ability for one thing to scratch another thing."
"I really want it rock hard before I work on it."
"My heart is hardened, I cannot repent."
"My heart no longer had space for mercy or forgiveness."
"This is face hardened armor, this is thick armored plate that after being made has then also been heated up so that a certain amount of the forward face becomes even harder."
"Don't harden your hearts, as they did in the rebellion."
"Human teeth are almost as hard as rocks."
"A diamond is also the hardest rock on the planet, that makes it perfect for cutting glass."
"When metal is heated past a certain temperature and cooled quickly, smaller grains are formed making the metal harder."
"Diamond is the hardest known material on the earth."
"Hardness is defined as the ability for a material to resist abrasion from another material."
"The surface hardness is 64 Rockwell C scale."
"The diamond's the hardest substance in the world."
"Diamonds are the hardest element known to man."
"The hardest allotrope of carbon is diamond."
"Diamonds have always been the standard for hardness, being the hardest known natural material to man."
"If you have a guava and you can feel that it is quite rough... all these cells make up the shell of a nut; they're very, very hard."
"When you fight yourself from crying for a long time, the heart starts to get hard."
"Diamond... has the highest hardness, ranking as a 10 on Mohs scale of hardness."
"...too long a sacrifice can make a stone of the heart."
"The only thing that can cut diamonds is diamonds."
"Diamonds are actually the strongest thing in the world, so the only thing that can scratch a diamond is a diamond."
"Our unknown sample is hard enough to cut glass, so what's the hardness? It's got to be a number bigger than 5.5."
"The hardest natural mineral is a diamond."
"Diamond is the hardest natural substance that we know of."
"Hardness is the measure of resistance to surface plastic deformation."
"The hardest natural material found on our planet is located in a very tiny creature, the aquatic snail."
"Diamonds are like no other substance; they're four times harder than any mineral on the planet."
"DLC, diamond like carbon coating, is actually harder than the steel."
"The remaining 80% play an important role in industry as the hardest material known to man."
"What is the world's hardest rock? Diamond."
"Martensite is the hardest of known materials in the carbon-iron alloy system."
"Diamond is hard and is used for cutting, as well as in jewelry for its good appearance."
"Citizen's Duratec... involves the application of nickel and oxygen to the surface of titanium to create about a 1,500 Vickers coating."
"This natural resource is set to be the hardest natural substance on Earth; it is made of 99.95% carbon."
"A stony heart is an impure heart, a divided heart, an unpeaceful heart."
"Sapphire is ranked nine on Mohs scale of mineral hardness."
"Covalent Network solids are held together by an extended network of covalent bonds, resulting in materials that are extremely hard, like diamond."
"Graphite is a soft substance used as a lubricant and in pencils, whereas diamond is a very hard substance used for saw blades and cutting tools."
"Diamond is very hard, one of the hardest substances on Earth."
"You can make surfaces harder; harder surfaces have less wear."
"It isn't true that Marinite is hard, it is the carbon in the Marinite that forms in iron that gives it the hardness."
"It's very resistant to corrosion, it's considerably lighter than steel, and yet can be made harder."
"Diamond is very hard and can be used for cutting metals."
"One of the most useful diagnostic properties is hardness, a measure of the resistance of a mineral to abrasions or scratching."
"Diamond is a crystal made from carbon and it's the hardest naturally occurring material on Earth."
"Think of a diamond: hard, brittle, high melting point."