Technical conditions for plates of P355GH P355GH manufacturer from China Gloria Steel

Technical conditions for plates of P355GH

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.: P355GH

Production Capacity: 3000~5000T

Delivery Date: 30 days

Means of Transport: Ocean

Packing: Standard seaworthy export p...

The technical conditions apply to plates of P355GH with thickness not more than 250mm. (8mm-250mm) used for Harbin Boiler produce CFB boiler.

Technical conditions for plates of P355GH

1. Scope

The technical conditions apply to plates of P355GH with thickness not more than 250mm. (8mm-250mm) used for Harbin Boiler produce CFB boiler.

2. Adopt standard:

EN10028-2: 2003 Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties

EN10163-2:2004 Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections - Part 2: Plate and wide flats Class B.

3. Dimension, Shape, Weight and Permissible Deviation

The dimension, shape, weight and permissible deviation shall meet the requirements of EN10029.

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	Alt	Cr	Cu	Mo	Nb	Ti	V	N
0.10- 0.22	Max 0.60	1.10- 1.70	Max 0.025	Max 0.015	Min 0.020	Max 0.30	Max 0.30	Max 0.08	Max 0.020	Max 0.030	Max 0.020	Max 0.012

Alt

0.10- 0.22

Max 0.60

1.10- 1.70

Max 0.025

Max 0.015

Min 0.020

Max 0.30

Max 0.08

Max 0.020

Max 0.030

Max 0.020

Max 0.012

4.2 Carbon equivalent (CEq)

Carbon equivalent shall be not more than 0.43 for plates of P355GH.

Carbon equivalent shall be calculated as follows:

CEq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 (%)

4.3 Mechanical properties

The mechanical properties of P355GH shall meet the requirement as table 2.

Table 2 Tensile properties

Thickness mm	Yield strength MPa	Tensile strength MPa	0C Akv (J)	Elongation %
8-60	Min 355	490-630	Min 34J	Min 22
60-100	Min 355	490-630	Min 34J	Min 21
100-150	Min 315	470-610	Min 34J	Min 21
150-250	Min 295	450-590	Min 34J	Min 21

4.4 SWHT: The optimized SWHT technology is as follows: heating at 610℃+/-10℃ for 7h, then followed by cooling in furnace to 400℃, then for air cooling.

4.5 Minimum values for the proof strength Rp0.2 at elevated temperatures shall meet the requirements per table 4.

Table 4 High temp Tensile properties

Test TEMP	Thickness mm	320℃	350℃	370℃
Rp0.2 Min (MPa)	8-40	225	214	209
	41-100	218	208	203
	101-250	212	202	197

4.6 Ultrasonic inspection

Plates shall be ultrasonic inspected per EN10160-1999 S2E2.

4.7 Test method and inspection rules

Test items, sampling quantity, sampling method and test method shall conform to table 5.

Table 5 Test items for plates

No.	Test item	Quantity, Piece	Sampling method	Test method
1	Chemical composition (Ladle analysis)	1 (per batch furnace number)	EN10028-2	EN10028-2
2	Tensile test	1 (Rolled pc)	EN10028-1	EN10028-1
3	Impact test at 0C	1 (Rolled pc)	EN10028-1	EN10028-1
4	High temperature tensile test	3 (Rolled pc)	EN10164	EN10164
5	Bend test	1 (Rolled pc)	EN10028-1	EN10028-1
6	UT	1 (Product pc)		EN10160