Knowledge Base
Technical guide to intergranular corrosion (IGC) and weld decay in austenitic stainless steels. Covers sensitisation mechanism, testing (ASTM A262), and prevention with L-grades and stabilised alloys.
Technical guide to reinforcing steel corrosion in concrete. Covers passive film in alkaline concrete, chloride threshold, carbonation, half-cell potential mapping, and CP for reinforced structures.
Complete guide to uniform (general) corrosion. Covers electrochemical mechanism, weight loss measurement, corrosion rate in mpy/mm/year, inhibitor types, and industrial monitoring techniques.
Technical guide to high-temperature oxidation. Covers oxide growth kinetics, Pilling-Bedworth ratio, protective vs non-protective scales, and MCrAlY coating systems for turbine alloys.
Free galvanic corrosion risk estimator based on the galvanic series in seawater. Select two metals to assess corrosion risk level, identify the anode, evaluate area ratio effects, and get engineering recommendations for prevention.
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.
Technical guide to liquid metal embrittlement (LME). Covers atomic bonding mechanism, classic LME systems (Hg-brass, Ga-Al, Pb-steel), grain boundary penetration, temperature and stress requirements, and industrial prevention.
Comprehensive guide to hydrogen in steel. Covers absorption sources, lattice diffusion vs trapping, reversible/irreversible traps, HEDE and HELP mechanisms, and practical prevention in welding and electroplating.
Technical guide to corrosion fatigue in engineering alloys. Covers crack initiation by pitting, corrosion fatigue crack growth rate enhancement, threshold stress intensity, and material/environment interaction for steels and aluminium.