What is P11 material?
ASTM A335 P11 Alloy Steel Pipe The A335 grade p11 pipe is a seamless ferritic Alloy based stainless Steel Pipe. The pipe is an alloy of Chromium Molybdenum. The presence of these two elements in the SA335 p11 pipe increases its mechanical properties.
What is ASTM A335 P11?
ASTM A335 P11 Seamless Pipe is made up of a carbon steel that has 415MPa minimum tensile strength 205MPa minimum yield strength. The material has high toughness and high wear and tear resistance. Navstar Steel is a leading manufacturer and supplier of the ASTM A335 P11 Pipe products in various dimensions and types.
Is P11 low alloy steel?
Low alloy materials are in accordance with the ASTM standards known as P-grades. The most frequently used P-grades are: P5, P9, P11, P22, and P91.
What is the difference between carbon steel and low alloy steel?
Low alloy steels have less than 8% total alloying elements in the composition, these steels have better hardness and resistance to wear over carbon steel but tend to have less tensile strength. The high alloy steels have more than 8% alloying elements and have better properties than those of the low alloying steels.
What is A182 F11 material?
ASTM A182 F11 Class1 is a forging material specification for F11 Class1 grade alloy steel and is used for manufacturing bare forgings or forged and machined products for applications involving high temperature service.
What is SA 106 material?
ASTM A106 Seamless Pressure Pipe (also known as ASME SA106 pipe) covers seamless carbon steel nominal wall pipe for high-temperature service. Suitable for bending, flanging and similar forming operations.
What is P11 pipe?
ASME SA335 P11 Seamless Pipes covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding.
What is the temperature required for PWHT for material A335 P11?
Our company has already done PWHT for material A335 P11 using the temperature of 730 DEGREES CELSIUS. As per ASME code B31.1 the temperature for this material is 650 to 700 Degrees Celsius only. So, we exceed the required temperature. Our client ask us to do a hardness test on HAZ on all 100 joints.
What is the maximum hardness after PWHT for P No 4 material?
Thank you so much for your help. The maximum hardness after PWHT for P-No 4 material per B31.3 Table 331.1.1 is 225 BHN. Regarding your PWHT temperature, you are within the range permitted for P-No 4 base material – 704 to 746 deg C at least for B31.3.
Is there a table 132 for P11 material?
B31.1 table 132 gives you some relief on P11 and P22 material in the general notes, some of which are based on material thickness, carbon content, and other considerations. 3. If the person that made the original post could tell us what hardness testing equipment is being used it could shed some light on this issue alittle.
What is the hardness of weld joints in HAZ?
Due to some unforeseen circumstances at our site, PWHT of some weld joints was not done effectively and resulted in higher hardness of weld joints although HAZ area hardness values are OK. The hardness number of weld joints is in the range of 260 – 320 HB which is unacceptable as per code requirements.