SA662 Grade B and C are ASME-spec carbon-manganese-silicon steel plates for moderate to low-temperature pressure vessels, differing mainly in strength levels (Grade C is stronger) and processing; Grade C often requires normalization for refined microstructure, while Grade B offers good weldability for fabrication, both serving similar applications like boilers and tanks.
Supplementary Technology: HIC Test | NACE MR0175 | Z15 | Z25 | Z35 | S1 | S2 | S3 | S4.1
S5 | S6 | S8 | S9| S11 | S12 | S17
Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm
SA662 grade B Chemical Composition
|
Grade/ Material |
Element |
Composition( Max-A, Min-I) |
|
SA662 Grade B/ SA662 GrB |
C |
A:0.19 |
|
Mn |
0.85-1.50 |
|
|
Si |
0.15-0.40 |
|
|
P |
0.035 |
|
|
S |
0.035 |
SA662 grade C Chemical Composition
|
SA662 grade C Chemical Composition |
|||||
|
Grade |
The Element Max (%) |
||||
|
C |
Mn |
P |
S |
Si |
|
|
SA662 grade C |
0.24 |
0.92-1.72 |
0.035 |
0.035 |
0.13-0.55 |
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
SA662 grade B Mechanical Property
|
Grade/ Material |
Tensile Test |
MPa |
|
SA662 Grade B/ SA662 GrB |
Tensile Strength |
450-585 |
|
Yield Strength |
275 |
|
|
Elongation |
20% |
|
|
Impact Test( if any) |
|
SA662 grade C Mechanical Property
|
Grade |
SA662 grade C Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
SA662 grade C |
mm |
Min Mpa |
Mpa |
Min % |
|
200 |
295 |
485-620 |
18 |
|
|
50 |
22 |
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Think of them as different strength levels for the same type of job (pressure vessels). Grade B is a good all-rounder, while Grade C offers higher strength and toughness for more demanding applications, achieved through stricter processing like normalization.
