The surface finish of SAE 1010 material at 65 HRB typically depends on the manufacturing process used, such as cold rolling or machining. Generally, cold-rolled SAE 1010 can achieve a smoother surface finish compared to hot-rolled versions, often resulting in a finish that ranges from 63 to 125 microinches (1.6 to 3.2 micrometers) Ra. However, the final surface finish can be further improved through additional processes like polishing or grinding, depending on the application's requirements.
The hardness of a material like EN8 is typically measured using a Rockwell hardness scale (e.g., HRC or HRB), which is not measured in joules. Hardness is a measure of a material's resistance to deformation, while joules are a unit of energy. The hardness of EN8 would depend on the specific heat treatment and method of testing used.
303 stainless steel typically has a Rockwell hardness of around 90-95 HRB (Rockwell B scale). This grade is known for its excellent machinability and good corrosion resistance, making it suitable for various applications, including screws, bolts, and fittings. Its hardness can vary slightly based on specific processing and heat treatment, but it generally maintains a softer profile compared to other stainless steel grades.
HRB stands for Rockwell Hardness Scale B, which is a measure of the hardness of a material. In steel, HRB is commonly used to determine the hardness of the material, with a higher HRB value indicating a harder material.
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90 HRB
Hardness Conversion TableTensileStrength(N/mm2)Brinell Hardness(BHN)Vickers Hardness(HV)RockwellHardness(HRB)Rockwell Hardness(HRC)28586903209510056.235010511062.338511412066.741512413071.245013314075.048014315078.751015216081.754516217085.057517118087.161018119089.564019020091.567519921093.570520922095.074021923096.777022824098.180023825099.582024225523.185025226524.888026127526.490026628027.193027629028.595028029529.299529531031.0103030432032.2106031433033.3109532334034.4112533335035.5115534236036.6119035237037.7122036138038.8125537139039.8129038040040.8132039041041.8135039942042.7138540943043.6142041844044.5145542845045.3148543746046.1152044747046.9155545648047.7159546649048.4163047550049.1166548551049.8170049452050.5174050453051.1177551354051.7181052355052.3184553256053.0188054257053.6192055158054.1195556159054.7199557060055.2203058061055.7207058962056.3210559963056.8214560864057.3218061865057.8
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6 HP
Gerald Matthes has written: 'Handlungsregulationsbogen (HRB)'
The hardness of 1010-1020 steel typically ranges from about 55 to 65 Rockwell B (HRB), depending on the specific composition and heat treatment process. These steels are low-carbon grades, which means they are relatively soft and ductile compared to higher carbon steels. They are often used in applications requiring good formability and weldability rather than high hardness. Heat treatment processes can increase hardness but are generally not common for these low-carbon grades.
The hardness of a material like EN8 is typically measured using a Rockwell hardness scale (e.g., HRC or HRB), which is not measured in joules. Hardness is a measure of a material's resistance to deformation, while joules are a unit of energy. The hardness of EN8 would depend on the specific heat treatment and method of testing used.
IS 2062 standard does not specify any Hardness Limit for the material. As such, even the equivalent SA36 does not specify anything on Hardness. But this being a P No.1 material in properties, the commonly accepted Hardness limit is 200HB or 93 HRB. Again there can be variation based on specific application/project requirements.