I'm looking for the difference between S235 en P235? Concerning mechanical, or chemical composition? I'm asking this question as St37.2 (S235, 1.0037) was used instead of St35.8 (P235, 1.0305) for a pressure pipe (14bar) at elevated temperature (up to 400°C). As I look in standards both steels...
Thanks,
I thought that due to the difference in corrosion potential of zinc and aluminum with stainless steel AND in the presence of moisture galvanic corrosion will occur.
We grit blast aluminum parts and stainless steel parts in the same area. My concern is that the stainless steel parts may...
When small iron/steel particles fall down on stainless steel parts, these particles will oxidise by presence of moisture. Iron oxides are created and in addition oxygen is prevented to enter the area and stainless steel becomes active. Contamination corrosion of stainless steel does occur.
My...
What will be the consequence if it will be done? A supplier did anodise a casted aluminum part. However the dimensioning was not conform specification, so he anodised it a second time, which resulted in acceptable dimensions.
The purpose of this anodisation is mainly to increase corrosion...
Conform specification EN 10025 S355J2 has a Charpy Value of min. 20J at -20°C. What can I expect for the charpy value at -10°C. For my design I need a min. value of 36J at -10°C. How is the charpy value varying by increasing temperature?
We use 100Cr6 quenched and tempered steel from two different suppliers. The steel is quenched in oil (60°C) and tempered for 1.5h at 165°C. The working temperature of these components can be up to 170°C continuously. The component needs to have a certain hardness and stable dimensions.
We did a...
A heater in a heater pipe is used to heat compressed air to 400°C. However it is possible that the heater does not turn off at 400°C and it can reach up to 800-900°C. In this case, the design requests the heater must fail before the heater pipe fails. As the heater pipe is constructed of St35.8...
We want to design coolers (of a compressor)made of duplex 2205 which have to compete against coolers made in CuNi tubes and brass endplates.
I'd like to know more about the corrosion properties of these materials.
Specification of the coolwater: maximal temperature:45°C, pH>6.8.
Has 2205 better...
Anyone knows mechanical properties (yield strength 0.2% and 1.0%, tensile strength, elongation, E-modulus)? I can not seem them to find anywhere. Thanks
