Titanium Plates for Plate Heat Exchangers Domestic TA1 (Grade 1) vs Japanese TP240C (Grade 1) – A Comparison of Materials

Titanium Plates for Plate Heat Exchangers Domestic TA1 (Grade 1) vs Japanese TP240C (Grade 1) – A Comparison of Materials

1. Standard & Grade Equivalence

TA1 (China) and TP240C (Japan) both belong to ASTM CP-Ti Grade 1 ultra-low oxygen commercial pure titanium, featuring ultra-high plasticity and excellent cold stamping performance, which is the preferred material for ultra-thin plate heat exchanger sheets (0.4–0.6mm).

Core Conclusion : In terms of national standard design parameters, chemical composition lower limit and mechanical performance, TA1 = TP240C = Grade 1. Both fully meet international heat exchanger pressure vessel design specifications.

2. Raw Material Quality Core Difference

Grade1 titanium focuses on ultra-low oxygen content and high plastic consistency. The gap between Chinese and Japanese materials is not in theoretical standards, but in microscopic impurity control, grain uniformity, batch stability and ultra-thin coil surface precision, which directly determines the stamping yield rate and long-term anti-corrosion stability of ultra-thin titanium plates.

3. Stamping & Forming Performance

Grade1 titanium has lower strength and better ductility than Grade2, which is more suitable for super-large depth corrugation, complex bending and ultra-thin plate forming of plate heat exchangers.

3.1 Chinese TA1

High-quality domestic TA1 has ultra-high elongation (≥24%), excellent cold forming performance, stable stamping yield rate for conventional and medium-deep corrugated plates. No hidden cracks or brittle cracking occur under standard processing technology. It is cost-effective and fully meets the mass production requirements of most heat exchanger products.

3.2 Japanese TP240C

TP240C is professionally optimized for ultra-thin Grade1 titanium stamping. The ductility and internal stress of the whole coil are highly consistent, with almost zero performance difference between head, middle and tail. It is the best choice for ultra-deep corrugation, high-precision customized plates and high-end imported equipment replacement parts, with the lowest micro-crack rate in ultra-thin stamping.

4. Corrosion Resistance & Service Life

4.1 Conventional Working Conditions (Equal Performance )

In normal temperature seawater, desalinated water, brine, neutral chloride solution, weak organic acid and other conventional heat exchanger mediums, TA1 and TP240C have identical corrosion resistance. Both can form dense and stable TiO₂ passivation film, with no corrosion failure risk during long-term stable operation.

4.2 Harsh Working Conditions (TP240C Minor Advantage )

Under high-temperature seawater, frequent dry-wet alternating cycles and trace corrosive impurity environments, TP240C with higher microscopic purity has lower point corrosion sensitivity, smaller performance discreteness, and more stable long-term service life.

5. Welding & Processing Performance

Both TA1 and TP240C are ultra-high plasticity Grade1 pure titanium, with excellent TIG welding performance, low welding brittleness and stable weld toughness.

TA1: Standard argon arc welding process obtains qualified welds with uniform structure, fully meeting equipment pressure bearing and sealing requirements.

TP240C: More stable impurity control, lower welding porosity tendency, higher consistency of weld forming quality for batch production.

6. Cost & Delivery