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Technical conditions for plates of SA387Gr11CL1 HIC
1. Scope
The technical conditions apply to plates of SA387Gr11CL1 HIC with thickness range 8mm-60mm.
2. Adopt standard:
ASME SA387/SA387M Specification for pressure vessel plates, alloy steel, Chromium-Molybdenum
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/+2.5mm
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)
Grade Thickness
mm C Si Mn P S Ni
SA387Gr11CL1
HIC Ladle analysis 0.05- 0.13 0.50- 0.80 0.40- 0.65 Max 0.010 Max 0.010 Max 0.20
Product analysis 0.04- 0.13 0.44- 0.86 0.35- 0.73 Max 0.010 Max 0.015 Max 0.25
Grade Thickness
mm Cr Mo Sb* Sn* As* H
SA387Gr11CL1
HIC 8-12.5 1.00- 1.50 0.45- 0.65 Max 0.0025 Max 0.010 Max 0.010 Max 0.0003
12.6-76 0.94- 1.56 0.40- 0.70 Max 0.0025 Max 0.010 Max 0.010 Max 0.0003
Note: Mark "*" just record the value.
4.2 Steel making process: EAF+LF/VD
4.3 Mechanical properties
The mechanical properties of SA387Gr11CL1 HIC shall meet the requirement as table 2&3.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa Elongation % Bend test
D=3.0a
8-60 Min 240 415-585 Min 22 180C un-cracked
4.4 Impact properties
Impact test in the longitudinal and transverse for plates of SA387Gr11CL1 HIC shall meet the requirements per table 3.
Table 3 Impact properties
Charpy-V Impact test
Test temp.
Celsius degree Transverse
Average impact energy
-30C Min 47J
4.5 Hardness: Max 22HRC
4.6 SWHT: Simulated Post-Weld Heat Treatment of Mechanical Test Coupons shall be prepared in 600+/-10 C with min.5 minute per each mm of thickness.
4.7 NACE MR0175/ISO 15156-2 / Annex B.5 / Test method NACE TM0284 in solution-A sour service (CLR =< 5% & CTR =<5% & CSR =< 2% shall be reported)
4.8 Surface quality
The surface quality of plates shall be accordance with ASTM A20/A20M.
4.9 Ultrasonic inspection
Plates shall be ultrasonic inspected per ASTM A578/A578M level B.
4.10 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 SA370 /
Tensile test 1 (per rolled pc) ASTM A20/A20M ASME SA370 SWHT
Charpy-V impact test at -20C 3 (per rolled pc) ASTM A20/A20M ASME SA370
Hardness 1 (per rolled pc) GB/T2975 GB/T 230.1
Product analysis 1 (per rolled pc) ASTM A20/A20M ASME SA370 +N
Ultrasonic test Each product pc ASTM A578/A578M
HIC test See 5.HIC NACE TM0284 NACE TM0284 SWHT
5. HIC sampling method: Per heat number/ thickness/ heat treatment rules combine one group.
6. Package, marking and certificate
Package, marking and certificate shall conform to A20.
7. The third party inspection
The chemical composition, tensile test and Charpy -V impact test and HIC test for plates of SA387Gr11CL1 HIC shall be witnessed by surveyor of SGS.
8. Delivery conditions
The delivery conditions for plates of SA387Gr11CL1 HIC shall be Normalized(accept ACCP)+ Tempered(temperature not less than 700 C degree.)
9. Other requirements
The other requirements for plates of SA387Gr11CL1 HIC shall be accordance with SA387/SA387M-2010.
MTC accordance with EN10204: 2004 3.1
More technical details and the MTC require please visit our web site: www.gloriasteel.com or contact us.
Sales Contact:
Sale engineer: Mr.Toby
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Email:Toby@gloriasteel.com
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