What is the difference between SA 285 GR C and A36?

Nov 07, 2025 Leave a message

ASTM-A36.pdf

What is Sa 285 Grade C Plate?

 

Sa 285 Grade C pressure vessel steel plate

Sa 285 Gr C is a low carbon steel grade. A Sa 285 Grade C pressure vessel steel plate is designed with an excellent composition of chromium, nickel, and molybdenum, giving the versatile Astm SA285 GR.C grade superior corrosion and oxidation resistance properties. The grade also exhibits good resistance against pitting and crevice corrosion.

 

The Astm SA285 Grade C alloy steel plate is employed in high-pressure applications due to its superior tensile strength across stress-induced systems. SA285 Grade C Plate has good workability and can be welded following standard welding procedures. The items in the SA285 C  GR.C are widely used in pressure vessels, boiler tubes, and so on.

 

A285 Grade C Vs A36

 

Sa 285 Grade C pressure vessel steel plateA36 grade is a structural steel grade. The SA285 GR.C Steel plate on the contrary is a high-strength carbon steel grade.

ASTM A285 Grade C Plate shows a small concentration of manganese which helps increase its hardenability. A36 steel doesn't possess any manganese content.

 

The SA-285 Steel Plates show the presence of chromium, nickel, and molybdenum in its concentration, giving it higher resistance against corrosive media than the A36 grade.

 

A36 grade has slightly higher tensile and yield strength over the ASTM A285 Grade C Carbon Steel Plate.

 

  • ASME SA285 Grade C hot rolled steel plate Chemical Composition

Element Composition % SA 285 Gr C
Manganese, maximum 00.90
Carbon, maximum 00.28
Phosphorus, maximum 00.025
Sulfur, maximum 00.025

 

  • ASTM A36 Chemical Composition

ASTM A36

Hot Rolled Steel Plate

Chemical Compostion
Element content
Carbon, C 0.25 - 0.290 %
Copper, Cu 0.20 %
Iron, Fe 98.0 %
Manganese, Mn 1.03 %
Phosphorous, P 0.040 %
Silicon, Si 0.280 %
Sulfur, S 0.050 %

 

  • SA 285 GR.C Plate Mechanical Properties
Element SA 285 Gr C
ksi (MPa)
Yield strength, minimum 30 ksi (205)
Elongation in 2 inch or (50mm), min, % 27
Tensile strength 55 to 75 ksi(380-515)
Elongation in 8 inch or (200 mm), min, % 23

 

  • ASTM A36 Hot Rolled Steel Plate Mechanical Properties
ASTM A36 Hot Rolled Steel Plate
Mechanical Properties Metric Imperial
Tensile Strength, Ultimate 400 - 550 MPa 58000 - 79800 psi
Tensile Strength, Yield 250 MPa 36300 psi
Elongation at Break (in 200 mm) 20.0 % 20.0 %
Elongation at Break (in 50 mm) 23.0 % 23.0 %
Modulus of Elasticity 200 GPa 29000 ksi
Bulk Modulus (typical for steel) 140 GPa 20300 ksi
Poissons Ratio 0.260 0.260
Shear Modulus 79.3 GPa 11500 ksi

 

Properties of Astm sA285 Grade C hot rolled steel plate

 

Astm SA285 Gr C is a high-temperature pressure vessel grade. The SA285 Grade C hot rolled steel plates can be machined and welded following standard welding procedures. The versatile grade possesses excellent corrosion and oxidation resistance properties. The SA 285 Gr.C Boiler & Pressure Vessel Steel Plates are designed with an outstanding tensile strength between 380mpa to 515mpa.

 

The robust SA 285 GR.C Plate exhibits a minimum yield strength of 205mpa and can be easily elongated by 27% in the system. The ASME SA285 Grade C Boiler Quality Plate is rolled or normalized in thickness between 6mm, up to 150mm or more.

 

Request A Quote

 

If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.

 

SA285 Grade C Plate

SA285 Grade C Plate

 

SA 285 Grade C Plate Dimensions

Width

Thickness

Length

2000

4

6000

2500

6

6000

2000

8

6000

2000

6

6000

2000

5

6000

2500

8

6000

1800

60

3400

2000

10

6000

2000

15

6000

2000

20

6000

2000

16

6000

2000

12

6000

2000

25

6000

2000

40

6000

2000

32

6000

2000

50

6000

 

Grades Of Pressure Vessel Plates Supplied By GNEE
ASTM ASTM A202/A202M ASTM A202 Grade A ASTM A202 Grade B    
ASTM A203/A203M ASTM A203 Grade A ASTM A203 Grade B ASTM A203 Grade D ASTM A203 Grade E
ASTM A203 Grade F      
ASTM A204/A204M ASTM A204 Grade A ASTM A204 Grade B ASTM A204 Grade C  
ASTM A285/A285M ASTM A285 Grade A ASTM A285 Grade B ASTM A285 Grade C  
ASTM A299/A299M ASTM A299 Grade A ASTM A299 Grade B    
ASTM A302/A302M ASTM A302 Grade A ASTM A302 Grade B ASTM A302 Grade C ASTM A302 Grade D
ASTM A387/A387M ASTM A387 Grade 5 Class1 ASTM A387 Grade 5 Class2 ASTM A387 Grade 11 Class1 ASTM A387 Grade 11 Class2
ASTM A387 Grade 12 Class1 ASTM A387 Grade 12 Class2 ASTM A387 Grade 22 Class1 ASTM A387 Grade 22 Class2
ASTM A515/A515M ASTM A515 Grade 60 ASTM A515 Grade 65 ASTM A515 Grade 70  
ASTM A516/A516M ASTM A516 Grade 55 ASTM A516 Grade 60 ASTM A516 Grade 65 ASTM A516 Grade 70
ASTM A517/A517M ASTM A517 Grade A ASTM A517 Grade B ASTM A517 Grade E ASTM A517 Grade F
ASTM A517 Grade P ASTM A517 Grade J    
ASTM A533/A533M ASTM A533 Grade A Class1 ASTM A533 Grade B Class1 ASTM A533 Grade C Class1 ASTM A533 Grade D Class1
ASTM A533 Grade A Class2 ASTM A533 Grade B Class2 ASTM A533 Grade C Class2 ASTM A533 Grade D Class2
ASTM A533 Grade A Class3 ASTM A533 Grade B Class3 ASTM A533 Grade C Class3 ASTM A533 Grade D Class3
ASTM A537/A537M ASTM A537 Class1 ASTM A537 Class2 ASTM A537 Class3  
ASTM A612/A612M ASTM A612      
ASTM A662/A662M ASTM A662 Grade A ASTM A662 Grade B ASTM A662 Grade C  
EN EN10028-2 EN10028-2 P235GH EN10028-2 P265GH EN10028-2 P295GH EN10028-2 P355GH
EN10028-2 16MO3      
EN10028-3 EN10028-3 P275N EN10028-3 P275NH EN10028-3 P275NL1 EN10028-3 P275NL2
EN10028-3 P355N EN10028-3 P355NH EN10028-3 P355NL1 EN10028-3 P355NL2
EN10028-3 P460N EN10028-3 P460NH EN10028-3 P460NL1 EN10028-3 P460NL2
EN10028-5 EN10028-5 P355M EN10028-5 P355ML1 EN10028-5 P355ML2 EN10028-5 P420M
EN10028-5 P420ML1 EN10028-5 P420ML2 EN10028-5 P460M EN10028-5 P460ML1
EN10028-5 P460ML2      
EN10028-6 EN10028-6 P355Q EN10028-6 P460Q EN10028-6 P500Q EN10028-6 P690Q
EN10028-6 P355QH EN10028-6 P460QH EN10028-6 P500QH EN10028-6 P690QH
EN10028-6 P355QL1 EN10028-6 P460QL1 EN10028-6 P500QL1 EN10028-6 P690QL1
EN10028-6 P355QL2 EN10028-6 P460QL2 EN10028-6 P500QL2 EN10028-6 P690QL2
JIS JIS G3115 JIS G3115 SPV235 JIS G3115 SPV315 JIS G3115 SPV355 JIS G3115 SPV410
JIS G3115 SPV450 JIS G3115 SPV490    
JIS G3103 JIS G3103 SB410 JIS G3103 SB450 JIS G3103 SB480 JIS G3103 SB450M
JIS G3103 SB480M      
GB GB713 GB713 Q245R GB713 Q345R GB713 Q370R GB713 12Cr1MoVR
GB713 12Cr2Mo1R GB713 13MnNiMoR GB713 14Cr1MoR GB713 15CrMoR
GB713 18MnMoNbR      
GB3531 GB3531 09MnNiDR GB3531 15MnNiDR GB3531 16MnDR  
DIN DIN 17155 DIN 17155 HI DIN 17155 HII DIN 17155 10CrMo910 DIN 17155 13CrMo44
DIN 17155 15Mo3 DIN 17155 17Mn4 DIN 17155 19Mn6