I need to know the hardness for c - 45 steel.
The typical hardness values for C45 steel is around 167-229 HB, for ST52 it is around 201-255 HB, and for SAE4140 it is around 217-249 HB. Hardness values can vary depending on the specific heat treatment and processing of the material.
Yes, a material with a hardness of 8 can scratch a material with a hardness of 7, but not the other way around. Hardness is a measure of a material's resistance to scratching, so a material with a higher hardness value can scratch a material with a lower hardness value.
No, the chemical composition of C45 and EN8D steels are different. C45 is a European standard designation for a medium carbon steel, while EN8D is an Indian standard grade for a medium carbon steel. It is important to check the specific chemical composition of each grade to ensure suitability for the intended application.
Mild steel, typically containing around 0.05% to 0.25% carbon, is known for its ductility, weldability, and ease of machining, making it suitable for general construction and fabrication. C45, on the other hand, is a medium carbon steel with a carbon content of approximately 0.45%, offering higher strength and hardness but lower ductility compared to mild steel. This makes C45 more suitable for applications requiring strength and wear resistance, such as gears and shafts, while mild steel is preferred for structural applications.
High grade spring steel. (Hardness with some flexability, not "springs" like a conventional "pressure plate".)
Hardness of a material depends on the type of bonding between atoms.
To identify the hardness of an unidentified material, you can use a hardness test such as the Mohs scale, Vickers hardness test, or Rockwell hardness test. These tests involve applying a specific amount of force to the material's surface and measuring the indentation or scratch it creates to determine its hardness.
Hacksaw hardness testing is a simple and rudimentary method used to estimate the hardness of a material. It involves cutting a groove into the material with a hacksaw blade and then comparing the resistance encountered while cutting to a known material hardness scale. This method is not as precise as standard hardness testing methods but can provide a rough estimate of the material's hardness.
The Rockwell C Hardness for a grade 10.9 fastener is 32 - 39HRC or 320 - 380Hv10
The physical property shown by scratching one material with another is hardness. Hardness is a measure of how resistant a material is to scratching or indentation.
The hardness of a material that scratches a knife blade would typically be higher than the hardness of the knife blade itself. This implies that the material is able to physically deform or remove material from the knife blade due to its greater hardness. This property is commonly assessed using the Mohs scale of mineral hardness.