SA516 Gr60N+HIC

SA516 Gr60N+HIC NACE MR0175

Beverly Steel provides a complete range of pressure vessel or boiler HIC steel plate tested for its resistance to hydrogen induced cracking (HIC) in

wet H₂S (sour service) environments. The steel plates are produced by Korea, Japan, China, Taiwan, South Africa, USA, European and Russia steel mills

• Crack Length Ratio (CLR) less than 5 %

• Crack Thickness Ratio (CTR) less than 1.5%

• Crack Sensitivity Ratio (CSR) less than 0.5%

The plate is tested to NACE TM 0284-03 Solution A and certified to EN 10204 3.2 (Lloyds). It is compatible with many of the world’s most stringent

proprietary specifications including Petrobras N1706, Saudi Aramco 01-SAMSS-016, EEMUA 179, Axens IN-43, Shell MESC 74/125, and Shell DEP 31.22.10.32.

We are able to offer plates to ASME / ASTM SA / A 516 Grades 60/65/70.

HIC Steel Plates

HIC (Hydrogen Induced Cracking) is the result of a corrosive reaction between carbon steel and hydrogen sulphide. Wet hydrogen sulphide (H₂S)

cracking in steel has been a problem in petroleum refining and upstream oil and gas processing since the 1950s.

Working conditions where wet H₂S prevails are often described as sour service conditions and the term sour gas can be also be used in this context.

As more fields rich in H₂S are exploited, and this is increasingly the case, the problem is increasingly significant for

equipment fabricated in potentially sensitive carbon-manganese (C-Mn) steels.

Steel in contact with water containing H₂S will corrode producing hydrogen at its surface. H₂S not only inhibits the formation of hydrogen gas,

so reducing the opportunity for it to escape, but promotes its absorption in to the steel. At typical working temperatures below 200 degrees Celsius

hydrogen atoms can become trapped causing embrittlement and ultimately cracking.

The use of steel pressure vessels in industries such as oil and gas processing requires a robust steel which is resilient to the long term corrosive effects of

hydrogen sulphide in sour service applications. In order to provide better H₂S resistance the properties of C-Mn steels have been progressively developed to

improve chemistry, cleanliness, homogeneity, and microstructure.

HIC steel plates supplied by Beverly Steel Malaysia represents the pinnacle of that development with the use of an electric arc furnace, ladle refining,

and vacuum degassing producing a homogenous, ultra clean steel suitable for use in sour service applications.

Specifications

ASME /ASTM SA/A516-60/65/70

Technical Specifications

Chemical Analysis

Max Ceq 0.41% <= 50mm, 0.43% > 50mm

Max S  0.001%, P  0.008%, Nb  0.015%, V  0.005%, O  0.002%

All material is made with an Electric Arc Furnace, fully killed, vacuum degassed, with fine grain.

Mechanical Properties

Mechanical and HIC tests after simulated PWHT at 610°C (2 min/mm).

Ambient tensile properties as per standard.

Charpy impact test longitudinal and transverse direction

• At -51°C for thickness <= 25mm (20J average /16J individual)
• At -46°C for thickness >25mm (41J average /34J individual)

NDT

Ultrasonic testing control as per SA 578 level C with +75mm pitch scanning and +100mm² max defect area.

SA516 Gr60N+HIC NACE MR0175 - General Supply Conditions

Normalized 920°C.   The material surface is shot blasted to SA 2.5, with low-stress die stamping at two locations: head and foot of plate.

In addition, material has identification paint markings on one end and shipping marks. Plates have continuous brand marked on the two long edges.

Additional Testing

We are able to offer supplementary testing to meet particular oil company specifications;

this will be carried out by an independent test laboratory.

Applications

• Condensers
• Dished ends
• Flanges
• Filters
• Heat exchangers
• Line pipe
• Pressure vessels
• Valves

Size Range

Thicknesses: 5mm-105mm

Widths: 2000mm, 2438mm,  2000mm, 3000mm, 3050mm

Lengths: 12,000mm (12meter)

There are three acceptance classes for HIC plates under EN 10028–3. Each acceptance class sets requirements for the

maximum permissible % of the crack to length ratio (CLR), the crack to thickness ratio (CTR) and the crack sensitivity ratio (CSR).

Acceptance class I is the most resistant, followed by II and then III.

The table below shows the acceptable test results using Test Solution A (pH3).

Acceptance Class	CLR %	CTR %	CSR %
|	≤ 5	≤ 1.5	≤ 0.5
||	≤ 10	≤ 3	≤ 1
|||	≤ 15	≤ 5	≤ 2

Beverly Steel Malaysia offer HIC resistant plate that meets acceptance class I (unless otherwise advised or requested).

A516 Grade 70N+HIC pressure vessel steel plate has been further tested to demonstrate that it is resistant to hydrogen induced cracking.

The steel plate must meet all the standard requirements of the grade – chemical composition and have the same mechanical properties –

but the manufacturing process has been developed so that when the steel is tested the cracks that form have certain maximum.

The designers will have full confidence to use  A516 Gr.70N+HIC boiler plate in sour service avoiding much more expensive stainless steel plate.

It is mainly used for pressure vessel and boiler manufacture in the oil and gas and petrochemical industries where the oil has high sulphur content (known as sour service).

Whilst more expensive than normal carbon steel boiler plate, it is significantly cheaper than stainless steel whilst having improved cracking resistance helping to

reduce maintenance and full life costs – as well as improved safety over standard boiler plate.

When steels are evaluated for resistance (not immunity) to HIC one of the key factors is the level of sulphur in the steel and typically maximum

allowable levels are 0.003% in plates if the acceptance tests in TM0284 are to be met.

European (EN) and American (ASTM/ASME) pressure vessel quality steel grades can both be produced with HIC resistance.

EN10028 specifies the acceptance requirements for the EN grades (starting with P) and the test requirements are specified in EN10229.

American grades are specified in NACE MR0175 and the testing requirements in NACE TM0284.

Generally we can offer A516 steel plate in grades 60, 65 and 70 which have been tested to TM 0284 and which meet acceptance class I of EN 10028–3.

A516 Gr.60N+HIC – Test Certs

Below are the indication of the steel plate quality that we can supply

Product Descriptions

Material	Heat	Test	Thickness (mm)	Width (mm)	Length (mm)
A 516 Gr. 60N + HIC	Heat 1	Test 1	8.0	3000	12000
	Heat 1	Tset 2	12.00	2055	12000
	Heat 2	Test 3	20.00	2055	12000
	Heat 3	Test 4	40.00	2055	12000

Hot Tensile Test

Material	Temp (°C)	Heat	Test	MPA RP02	RM	A % L0=21N	A % L0=81N
A516 Gr. 60N + HIC	400°C	Heat 1	Test 1	381	541		21.6
	400°C	Heat 1	Test 2	359	525		25.3
	400°C	Heat 2	Test 3	341		28.8	29.9
	400°C	Heat 2	Test 4	339	526	35.6

Impact Test

Material	Temp (°C)	Heat	Test	Energy Joule	Transverse of Charpy V Notch Test
					Test 1	Test 2	Test 3	Test 4
A516 Gr.60N+HIC	400°C	Heat 1	Test 1	600	97	99	111	102
	400°C	Heat 1	Test 2	600	141	132	127	133
	400°C	Heat 2	Test 3	600	95	66	18	60
	400°C	Heat 3	Test 4	600	72	74	71	72

Chemical Analysis

Heat	C	Mn	P	S	Si	Cu	Ni	Cr	Mo	Al	Nb	V	CA	O
Heat 1	0.194	1.18	0.007	0.0007	0.363	0.020	0.029	0.024	0.015	0.035	0.001	0.001	0.0013	0.0007
Heat 2	0.179	1.18	0.008	0.0001	0.366	0.019	0.032	0.207	0.007	0.035	0.001	0.001	0.0011	0.0006
Heat 3	0.195	1.14	0.008	0.0005	0.345	0.144	0.258	0.040	0.017	0.035	0.001	0.001	0.0011	0.0009

A516 Gr70N+NACE –Test Certs

Below are the indication of the steel plate quality that we can supply

Product Descriptions

Material	Heat	Test	Thickness (mm)	Width (mm)	Length (mm)
A 516 Gr. 70N+ NACE	Heat 1	Test 1	8.0	3000	10000
	Heat 2	Tset 2	14.00	3000	12000
	Heat 3	Test 3	20.00	3000	12000

Hot Tensile Test

Material	Temp (°C)	Heat	Test	MPA REH	MPA RP02	RM	A % L0=5D	A % L0=81N
A516 Gr. 70N + NACE	400°C	Heat 1	Test 1		384	549	23.2
	400°C	Heat 2	Test 2	389		536	29.5
	400°C	Heat 3	Test 3		406	548		29.3

Impact Test

Material	Temp (°C)	Heat	Test	Energy Joule	Transverse of Charpy V Notch Test
					Test 1	Test 2	Test 3	Test 4
A516 Gr. 70N + NACE	400°C	Heat 1	Test 1	600	134	127	157	139
	400°C	Heat 2	Test 2	600	157	1169	154	160
	400°C	Heat 3	Test 3	600	204	168	158	177

Chemical Analysis

Heat	C 70	C	SI	MN	P	S	N	CU	MO
Heat 1	Y	0.180	0.380	1.20	0.008	0.0011	0.0050	0.011	0.006
Heat 2	Y	0.179	0.364	1.18	0.007	0.0008	0.0063	0.018	0.010
Heat 3	Y	0.177	0.373	1.19	0.011	0.0009	0.0051	0.127	0.005

Heat	C 70	NI	CR	V	NB	SN	TI	ALT
Heat 1	Y	0.020	0.223	0.001	0.001	0.001	0.001	0.051
Heat 2	Y	0.030	0.213	0.001	0.001	0.001	0.002	0.040
Heat 3	Y	0.21	0.012	0.001	0.019	0.001	0.002	0.042