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|Business Type||Manufacturer, Exporter, Supplier, Retailer|
|Thickness||100-200mm, 200-300mm, 400-500mm|
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Preferred Buyer From
|Location||India, Kuwait, Oman, Saudi Arabia, Turkey|
Welding:-If welding is necessary pre-heat at 250°C and follow welding with a full anneal. Grade 420 filler will give a high hardness weld (although not as high as the 440C), but 309 or 310 will produce soft welds with higher ductility.
|440C||min. max.||0.95 1.20||-1||-1||-0.04||-0.03||16.00 18.00||-0.75||-||-|
|Tempering Temperature (°C)||Tensile Strength (MPa)||Yield Strength 0.2% Proof (MPa)||Elongation (% in 50mm)||Hardness Rockwell (HR C)||Impact Charpy V (J)|
|* Annealed properties are typical for Condition A of ASTM A276# Brinell Hardness is ASTM A276 specified maximum for annealed 440A, B and C.|
|Grade||Density (kg/m3)||Elastic Modulus (GPa)||Mean Coefficient of Thermal Expansion (mm/m/°C)||Thermal Conductivity(W/m.K)||Specific Heat
|Electrical Resistivity (nW.m)|
|0-100°C||0-200°C||0-600°C||at 100°C||at 500°C|
|Grade||Why it might be chosen instead of 440C|
|440A/B||Slightly softer and more corrosion resistant grade needed|
|440F||High machinability required, with same hardness and hardenability as 440C|
|420||Lower strength and hardness needed than any of the 440 Grades|
|416||Higher machinability required, and the much lower hardness and strength is still adequate|