Knowledge Base
Free Vickers to Rockwell C hardness converter per ASTM E140-12b. Convert HV to HRC or HRC to HV with also Brinell HBW and approximate UTS. Includes ASTM E140 quick reference table for steels.
Free Ac1 and Ac3 critical temperature calculator for steel heat treatment design. Uses Andrews (1965) empirical equations to predict austenitising temperature range from steel composition.
Free Ms temperature calculator for steel. Uses Andrews (1965), Steven-Haynes (1956), and Barbier (2012) empirical equations to predict martensite start temperature from steel composition.
Free corrosion rate calculator using the gravimetric weight-loss method per ASTM G1/G31. Outputs mm/year, mpy, µm/year, and g/m²/day from coupon weight loss, exposure time, area and metal density.
Free PREN (Pitting Resistance Equivalent Number) calculator for stainless steels and nickel alloys. Computes PREN and PRENw with tungsten, plus seawater service rating and closest standard grade comparison.
Free weld fillet size calculator per AWS D1.1 and EN 1993-1-8 Eurocode 3. Calculates minimum fillet weld leg size from plate thickness and required fillet size from applied shear load and weld length.
Free online weld metal deposition rate calculator for GMAW, FCAW, SMAW, and SAW processes. Calculate kg/h deposition rate from wire feed speed, diameter, and duty cycle to estimate weld time and filler metal consumption.
Free steel hardness conversion calculator. Convert HRC, Vickers HV, Brinell HBW, and Rockwell HRB per ASTM E140. Also estimates approximate tensile strength (UTS) from hardness for steels.
Free online welding heat input calculator per ASME Section IX and ISO 1011-1. Calculate heat input in kJ/mm for GMAW, SMAW, GTAW (TIG), SAW, and FCAW with process efficiency factors.
Free online carbon equivalent calculator. Computes CE(IIW) and Pcm from steel composition with weldability classification. Essential tool for welding engineers and fabricators.