Hardness Test Criteria after PWHT (A335 P11)
Hardness Test Criteria after PWHT (A335 P11)
(OP)
Good day to all!
Please help me regarding Hardness Test after PWHT.
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.
My questions are:
1. What is the Hardness criteria of A335 P11 after PWHT?
2. What code, or what reference should I use?
3. Aside from doing hardness test and cut-out of joint (re-pwht); is there any way/ procedure that I may use to present to my Client?
Thank you so much for your help.
-ALEX
Please help me regarding Hardness Test after PWHT.
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.
My questions are:
1. What is the Hardness criteria of A335 P11 after PWHT?
2. What code, or what reference should I use?
3. Aside from doing hardness test and cut-out of joint (re-pwht); is there any way/ procedure that I may use to present to my Client?
Thank you so much for your help.
-ALEX





RE: Hardness Test Criteria after PWHT (A335 P11)
RE: Hardness Test Criteria after PWHT (A335 P11)
Thank you so much for your response.
You are right that B31.3 has 225 BHN. yet, our team is still in doubt because our project is Power Plant and the code we used is B31.1.
B31.1 did not mention any hardness test criteria.
Is it advisable to refer B31.3 as our Hardness reference in lieu to our reference code B31.1?
Thank you so much sir,
regards
-alex
RE: Hardness Test Criteria after PWHT (A335 P11)
RE: Hardness Test Criteria after PWHT (A335 P11)
If your client did not specify a min/max hardness, he is doing it for information. Any re-heat treatment that the client might require would be at his cost.