Technical conditions for plates of SA203GrD SA203GrD manufacturer from China Gloria Steel

Technical conditions for plates of SA203GrD

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


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Product Detail

Model No.: SA203GrD

Production Capacity: 3000~5000T

Delivery Date: 30 days

Means of Transport: Ocean

Packing: Standard seaworthy export p...

The technical conditions apply to plates of SA203GrE with thickness range 8mm-100mm.

Technical conditions for plates of SA203GrD

1. Scope

The technical conditions apply to plates of SA203GrD with thickness range 8mm-100mm.

2. Adopt standard:

ASME SA203/SA203M Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel ASME SA20/SA20M Standard Specification for General Requirements for Steel Plates for Pressure Vessels

ASME SA370 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 ASME SA20/SA20M.

The thickness toleration: -0 mm/+3.5mm

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)

Thickness mm	C	Si	Mn	P	S	Ni	Mo	V
Ladle analysis	0.17- 0.20	0.15- 0.35	0.38- 0.80	Max 0.012	Max 0.005	3.25- 3.70	Max 0.12	Max 0.05

Thickness

Ladle analysis

0.17- 0.20

0.15- 0.35

0.38- 0.80

Max 0.012

Max 0.005

3.25- 3.70

Max 0.12

Max 0.05

4.2 Steel making process: EAF+LF/VD

4.3 Mechanical properties

The mechanical properties of SA203GrD shall meet the requirement as table 2&3.

Table 2 Tensile properties

Thickness mm	Yield strength MPa	Tensile strength MPa	Elongation %	Bend test D=3a
8-60	Min 275	485-620	Min 21	180C un-cracked
61-100	Min 255	480-610	Min 21	180C un-cracked

Thickness mm

Yield strength MPa

Tensile strength MPa

Elongation %

Bend test

D=3a

8-60

Min 275

485-620

Min 21

180C un-cracked

61-100

Min 255

480-610

Min 21

180C un-cracked

4.4 Impact properties

Impact test in the longitudinal and transverse for plates of SA203GrD shall meet the requirements per table 3.

Table 3 Impact properties

Charpy-V Impact Test temp. Celsius degree	Transverse
Average impact energy
-101 C	Min 47J

Charpy-V Impact

Test temp.

Celsius degree

Transverse

Average impact energy

-101 C

Min 47J

4.5 SWHT: Simulated Post-Weld Heat Treatment of Mechanical Test Coupons shall be prepared in 590+/-20 C with min.5 minute per each mm of thickness.

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

Test item	Quantity, Piece	Sampling method	Test method	Sampling conditions
Ladle analysis	1 (per furnace)	ASTM A20/A20M	ASME SA751	/
Tensile test	1 (per heat treatment pc)	ASTM A20/A20M	ASME SA370	SWHT
Charpy-V impact test at -101C	3 (per heat treatment pc)	ASTM A20/A20M	ASME SA370	SWHT
Ultrasonic test	Each product pc	ASTM A578/A578M		N, N+T, Q+T