ASME SA387 Gr 11 CL 1 is a chromium molybdenum alloy steel plate intended primarily for welded boiler and pressure vessels designed of elevated temperature service.
The Cr content 1.25% and the Mo content 0.5%.

Chrome moly plate under ASME SA387 in serveral grades that has different alloy contents as below, common use grades are Gr 11, 12,22, 5, 9 and 91.

Chemical Composition and Mechanical Properties:

SA387 Gr.11 CL.1Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	Cr	Mo
SA387 Gr.11 Cl.1	0.04-0.17	0.44-0.86	0.35-0.73	0.035	0.035	0.94-1.56	0.40-0.70

Grade	SA387 Gr.11 CL.1Mechanical Property
Grade	Thickness	Yield	Tensile	Elongation
SA387 Gr.11 Cl.1	mm	Min Mpa	Mpa	Min %
	t≦50	240	415-585	22
	50<t≦200	240	415-585	19

Refered Standards for ASTM A387 Alloy Steel Plate

ASTM

A20/A20M: General requirements for pressure vessel plates.
A370: Test specification for mechanical properties of steel
A435/A435M: For straight-beam ultrasonic examination of steel plates
A577/A577M: For ultrasonic angle beam examination of steel plates
A578/A578M: For straight beam UT examination of rolled steel plates in special applications
A1017/A1017M: Specification for pressure vessle plates of alloy steel, chromium-molybdenum-tungsten

AWS Specification

A5.5/A5.5M: Low alloy steel electrodes for shield metal arc welding.
A5.23/A5.23M: Low alloy steel electrodes for fulxes for submerged arc welding.
A5.28/A5.28M: For gas shielded arc welding
A5.29/A5.29M: For flux cored arc welding.

Heat Treatment for A387 Chrom Moly Alloy Steel Plate

Chrome moly alloy steel plate under ASTM A387 shall be killed steel, with thermally treated either by annealing, normarlizing and tempering. Or in case agreed by buyer, accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering, minimum tempering temperatures shall be as below table:

Grade	Temperature, °F [°C]
2, 12 and 11	1150 [620]
22, 22L, 21, 21L and 9	1250 [675]
5	1300 [705]

CUSTOMER TRANSACTION

Always adhere to the tenet of high quality, low cost, fast pace and excellent service. Shandong Chengshun Metal Materials Co., Ltd. is willing to cooperate sincerely with friends from all walks of life at home and abroad for common development.

STORAGE VIDEO

Factory Appearance

Shandong Chengshun Metal Materials Co., Ltd. is located in Jinan City, Shandong Province. It is a comprehensive company dealing in high-quality steel products, with a superior geographical location and very convenient transportation. The company has a complete and scientific quality system, and has been recognized by the industry for its integrity, strength and product quality.

Packing and shipping

Mainly exported to Europe, Southeast Asia, South Africa, the Middle East, Latin America and other countries and regions, the products are favored by Chinese and foreign users.

CERTIFICATE OF HONOR

COOPERATIVE PARTNER

PRODUCTION WORKSHOP

Boiler Pressure Vessel Steel