Technical conditions for plates of EQ70 EQ70 manufacturer from China Gloria Steel

Price:	2000.0~5000.0 USD
Payment Terms:	T/T,L/C
Place of Origin:	Guangdong, China (Mainland)


	Add to My Favorites
HiSupplier Escrow	Share \|

Product Detail

Model No.: EQ70

Production Capacity: 3000~5000T

Delivery Date: 30 days

Means of Transport: Ocean

Packing: Standard seaworthy export p...

The technical conditions apply to plates of EQ70 with thickness not more than 254mm. (10mm-254mm)

Technical conditions for plates of EQ70

1. Scope

The technical conditions apply to plates of EQ70 with thickness not more than 254mm. (10mm-254mm)

2. Adopt standard:

ABS rules.

ASTM A20/A20M Standard Specification for General Requirements for Steel Plates for Pressure Vessels

ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products

3. Dimension, Shape, Weight and Permissible Deviation

The dimension, shape, weight and permissible deviation shall meet the requirements of ASTM A20/A20M.

Thickness tolerance: +/-1.52mm

Flatness: 4mm/m

Surface shot blasting or peeled.

4. Technical conditions

4.1 Chemical composition (Ladle analysis)

The chemical composition of plates shall be accordance with the following table 1.

Table 1 Chemical composition (Ladle analysis)

C	Si	Mn	P	S	Cr	Ni	Mo	V
Max 0.18	0.15- 0.35	0.95- 1.30	Max 0.035	Max 0.010	1.00- 1.50	1.20- 1.50	0.40- 0.60	0.030- 0.080

4.2 Steel making process: EAF+LF/VD (ESR)

4.3 Mechanical properties

The mechanical properties of EQ70 shall meet the requirement as table 2.

Table 2 Mechanical properties

Thickness mm	Mechanical properties	Lateral expansion mm	Hardness test 1/4 T HB
Yield strength MPa	Tensile strength MPa	Section shrinkage ratio %	Elongation %
100	Min 690	790-930	Min 45	Min 14	Min 0.38	Min 260

Thickness

Mechanical properties

Lateral expansion

Hardness test

1/4 T

Yield strength MPa

Tensile strength MPa

Section shrinkage ratio %

Elongation %

100

Min 690

790-930

Min 45

Min 14

Min 0.38

Min 260

4.4 Impact properties

Impact test in the longitudinal and transverse for plates of EQ70 shall meet the requirements per table 3.

Table 3 Impact properties

Charpy-V Impact Test temp. Celsius degree	Longitudinal 1/4 Thickness	Longitudinal 1/2 Thickness
	Average impact energy		Average impact energy
-40C	Min 69J	-40C	Min 69J

Charpy-V Impact

Test temp.

Celsius degree

Longitudinal 1/4 Thickness

Longitudinal 1/2 Thickness

Average impact energy

-40C

Min 69J

-40C

Min 69J

4.5 Grain size

Grain size for plates shall be according to EQ70.

4.6 Surface quality

The surface quality of plates shall be accordance with ASTM A20/A20M.

4.7 Ultrasonic inspection

Plates shall be ultrasonic inspected per ASTM A578/A578M level C.

4.8 Test method and inspection rules

Test items, sampling quantity, sampling method and test method shall conform to table 4.

Table 4 Test items for plates

No.	Test item	Quantity, Piece	Direction	Test menthod
1	Hardness	1	/	According to ASTM A370
2	Tensile test	1 (per heat treatment pc)	Transverse
3	Charpy-V impact test at -40C	6 (per heat treatment pc)	T/4 Longitudinal
4	Charpy-V impact test at -40C	6 (per heat treatment pc)	T/2 Longitudinal