Material selection cannot be made from an H₂S label alone. The purchaser or design authority should define the fluid chemistry, partial pressures, water phase, pH, chlorides, temperature, applied stress and expected exposure.
Higher strength can increase susceptibility to environmentally assisted cracking. Grade selection therefore needs to be reviewed together with heat-treatment route, wall thickness and hardness limits.
If SSC, HIC, SOHIC or corrosion testing is required, the method, test solution, stress level, specimen orientation, duration and acceptance criteria should be stated.
The released product should remain connected to its heat identity, heat treatment, hardness results, supplementary tests, marking and inspection records.