Materials

Question 1

What is the difference between A105 and A234 carbon steels?

Answer 1

A105 is forged carbon steel, and A234 is wrought carbon steel, not casting.

Question 2

What does WCB stand for?

Answer 2

WCB is wrought carbon steel, grade B. Grade B has good strength and toughness

Question 3

What is ASTM A790 UNS S32205?

Answer 3

Duplex stainless steel. It has higher tensile and yield strength than austenitic stainless steels and has good balance of hardness and ductility. It has high corrosion resistance at temperatures up to 316°C.

Question 4

What are the advantages duplex stainless steel pipes?

Answer 4

Duplex stainless steel pipes are designed to resist corrosion and stress corrosion cracking, and are often used in harsh conditions. They are also known for their superior mechanical properties compared to standard austenitic stainless steels.

Question 5

Stainless steel should be ____________ to maximize its corrosion resistance and ensure its long-term performance. It creates a chemical barrier that protects against rust, extends the product’s life, and reduces maintenance needs.

Answer 5

passivated

Question 6

When should passivation be done for stainless steel piping?

Answer 6

Passivation is a best practice for newly-machined stainless steel parts and components. It’s also recommended when modifying a high purity water system or joining new tubing to existing tubing.