SA516Gr70 (HIC) Introduction:
Since the 90s of last century, based on 20R, 16MnR and SA516Gr70, Wugang has jointly developed 16MnR (HIC) steel plate with Sinopec related design institutes in 1998 and made SA516Gr70 (HIC) combined with market demand in 2000.
SA516Gr70 (HIC) quality performance:
1, the content of steel plate P and S is low, the purity is high, and the corrosion resistance of wet hydrogen sulfide is good.
2, the toughness is good at low temperature, and the steel plate above 100mm can protect the thickness of the plate at 1/2, and the impact is -30 C.
3, Wugang is the largest manufacturer of anti HIC steel, which has the thickest specification of 176mm, and can ensure Z35 performance in the direction of thickness.
4, anti hydrogen induced crack (HIC) performance test, anti hydrogen induced cracking (HIC) test method NACE TM0284 or GB8650 standard, three samples mean value: CLR = 10%, CSR = 3%, CTR = 1%;
CLR: crack length percentage, CSR: crack sensitivity percentage, CTR: crack thickness percentage;
5, excellent resistance to sulfide stress corrosion (SSCC);
6. The steel plate surface hardness is controllable, the product has good machinability and easy to roll plate.
The scope of application of SA516Gr70 (HIC):
The technical conditions are suitable for use in the acidic environment of the thickness is less than 165mm SA516Gr60 (HIC), SA516Gr60 (R-HIC), SA516Gr65 (HIC), SA516Gr65 (R-HIC) and SA516Gr70 (HIC), SA516Gr70 (R-HIC) inspection and acceptance of steel plate. Add sulphide stress corrosion (SSCC) test items, hydrogen sulfide corrosion resistance steel plate number is expressed by SA516Gr60 (R-HIC), SA516Gr65 (R-HIC) and SA516Gr70 (R-HIC). In order to meet the different requirements of users and facilitate production management, the requirements of S and P for steel are divided into three, II, and III levels.
SA516Gr60 (HIC) brand name:
SA516Gr60 (HIC) - I refers to the steel grade SA516Gr60, and the corrosion test is only hydrogen induced cracking test (HIC).
Requirements analysis of P smelting below 0.015, S = 0.003; P = 0.015, S product analysis is less than or equal to 0.004. SA516Gr60 (R-HIC) - I
Refers to the steel grade SA516Gr60, corrosion test of hydrogen induced cracking test (HIC) and sulfide stress corrosion (SSCC) test, P analysis, S = 0.015 = 0.003 melting composition;
Analysis of SA516Gr70 (HIC) finished products
P = 0.015, S = 0.004. 3. Size, shape, weight and allowable deviation: the size, shape, weight and allowable deviation of the steel plate shall be in accordance with the ASMESA20 / SA20M regulations. The surface quality of the steel plate shall be in accordance with the regulations of ASMESA20/SA20M. The marks and certificate of quality of the steel plate shall be in accordance with the provisions of ASMESA20/SA20M.
SA516Gr70 (HIC) additional requirements
(as required by the user and marked in the contract only to be guaranteed)
1. post welding heat treatment system
2. high temperature stretching (negotiation between the two sides)
3. low temperature impact (negotiation between the two parties)
4. test method for anti hydrogen induced crack (HIC) test of steel plate A. test method of anti hydrogen induced crack (HIC), one of the test methods is chosen.
(1) the implementation of NACETM0284 standard, using A solution, the three sample average: CLR = 10%; CSR = 3%; CTR = 1%. (2) the implementation of NACETM0284 standard, using B solution, the three sample average: CLR = 10%; CSR = 3%; CTR = 1.5%. (3) the implementation of GB8650 standard, using A solution, the three sample average: CLR = 10%; CSR = 3%; CTR = 1.5%. (4) the implementation of GB8650 standard, using B solution, the three sample average: CLR = 10%; CSR = 3%; CTR = 1.5%. Among them, PH: medium pH value; CLR: crack length percentage; CSR: crack sensitive percentage; CTR: crack thickness percentage; B.HIC test acceptance rule; HIC test shall be checked in batches, and each batch is made of steel plate with the same furnace number, the same thickness and the same heat treatment system. When the thickness is not greater than 30mm, a group of specimens is taken. The size of the sample is *20mm*100mm. When the thickness is greater than 30mm, a set of samples is taken from the thickness 1/2, and the sample size is 20mm*20mm*100mm.
Test rules for SA516Gr70 (HIC) steel plate resistance to sulfide stress corrosion test:
A. resistance to sulfide stress corrosion (SSCC) test method,
The B. test method selected one of them (1) to execute the GB4157 standard.
C. (2) executes NACETM0284 standard B.SSCC test acceptance rule, threshold stress is 80% of nominal yield, SSCC test shall be checked in batches, one batch is selected on the steel plate of the same contract number, and a set of samples is taken from the thickness 1/2.
Wear-resistant board: WNM360E.WNM400E.WNM450A.WNM500A.WRZ360.WRZ400A.
Wear-resistant steel: WSM718R.WSMP20R..
Quenched and tempered high strength steel plate: WQ690D.S960Q.WH100QD.WQ960E.S960Q.WQ890D.A514GrQ/A517GrQ/E
690/EQ70.A514GrF.
TMCP high strength steel plate: E500.Q500E.S500M.
Quenched and tempered steel plate: EQ47/E460.EQ63/E620. A/SA533B. EQ51/E500.1E0653.1E0682.1E1839.WNM255A
Nuclear power plate: 16MnD5/18MnD5/20MnD5.15MnNi.20 control Gr.
Military steel plate: 603 (30CrMnMoRE) GY4 (28Cr2Mo).GY 5 (26SiMnMo).675 (30CrNi3MoV)
Electroslag plate: class.Q390 class.Q420D-Q460D.Q235D of class Q345E.
Container plate: Q245R (HIC), Q345R (HIC), SA516Gr70, 15CrMoR, Q420R, 09MnNiDR, SA387Gr11, SA387Gr22, 13MnNiMoR, SA387Gr22, Dan, h, h, R, R, x, etc.
Alloy steel: 35CrMo, 42CrMo, 40Cr, 10CrMoAL, 22SiMn2, 30CrMnSiA
Undertake specifications: thickness 8-650mm, wide 1500-4020mm, length 3000-18800mm
Can cut and process the opposite sex, as long as you provide the drawings and requirements, the rest of the hand to us!
I hope our company can save the cost and maximize the benefit for your company.