WYJ033-2006                      16MnR（R-HIC）－A

1. applicable scope:

The technology conditions apply to 8-13 mm of thickness in wet acidic conditions of use 16 MnR (R-HIC)-A steel production and acceptance.

2. The size, shape, weight and allow deviation

2.1 the size of the steel plate, shape, weight and deviation should be allowed to meet the provisions of the GB6654-1996.

2.2 the thickness of the steel plate deviation shall meet the provisions of the GB6654-1996.

4.3 delivery status: normalized delivery.

4.4 the state: deal with simulated test is fire after welding heat treatment, heat treatment after welding simulation system 625 + 15 ℃, heat preservation time for 8 hours.

4.5 mechanical properties and process performance

4.5.1 simulation test after welding after heat treatment of tensile, impact, bending test results should comply with the provisions of the mark 2 (test as horizontal).

table2

Note: > 80 mm steel plate provided-30 ℃transverse impact energy measured value.

4.5.2 steel plate to crack resistance of the hydrogen cracking (HIC) test

Hydrogen to crack resistance to cracking (HIC) test methods perform GB8650-88 standard, before the test solution PH = 3.0-4.5, three test average for: CLR≤5％；CSR≤0.5％；CTR≤1.5％；

PH：Medium ph;   CLR

:Crack length percentage；CSR：Crack sensitive percentage；CTR：Crack thickness percentage

HIC test should check and accept by group ，each group consist of the same number of furnace, same thickness and the same heat treatment system steel plate.>30mm，test size is thickness of plate. *20mm*100mm；>30mm，Take a place from thickness 1/2 of experimental，test size 20mm*20mm*100mm，Test method for horizontal。

4.5.3Steel corrosion resistance to sulfide stress test

Steel corrosion resistance to sulfide stress test (SSCC) test methods perform GB4157-84 standard, the stress threshold Reh quartile 230 MPa patients group of methods: choice one group freely in the maximum thickness steel plate  for the test.