S355JR Round Bars Manufacturers & Suppliers
Email : piyushsteel@gmail.com
PIYUSH STEEL are the Leading Manufacturers of S355JR Round Bars. PIYUSH STEEL also Export this S355JR Round Bars to Various Countries.
Mechanical properties of grade S355JR
Technological properties of grade S355JR
Hardness and heat treatment specification of grade S355JR
| Annealing hardness HBS |
Cold pull hardness HBS |
Preheating temperature ℃ |
Quenching temperature ℃ |
Holding time min |
Hardening medium | Temper temperature ℃ |
After tempering hardness ≥HRC |
|
| salt-bath furnace | controlled atmosphere furnace | |||||||
| 235 | 262 | 788 | 1191 | 1204 | 5～15 | air cooling | 522 | 60 |
| Steel plate/Sheet thickness / mm |
σb MPa |
σs ≥/MPa |
δ Samples from the standard for 50 mm (2 in) |
180 ° of cold bending test | |
| longitudinal | horizontal | ||||
| Hot-rolled/Cold rolling:5 - 150 | 520 | 415 | 16～18 | 2a | 3.5a |
| Note: (1) listed in the table apex diameter (d), to steel thickness (a) multiples said. (2) in the ASTM A6 standard specified scope can meet any additional conditions. (3) from the standard for 50 mm (2 in). | |||||
Structural application in freight cars, transmission towers, dump trucks, cranes, trailers, bull dozers, excavators, forestry machines, railway wagons, dolphins, penstocks, pipes, highway bridges, building structures, offshore structures, shipbuilding, fans, pumps, lifting equipments and port equipments.
S355JR Chemical Composition Analysis (max) %
Grade
|
C%
|
Si %
|
Mn %
|
P %
|
S %
|
N %
|
Cu %
|
S355JR
|
0.270
|
0.600
|
1.700
|
0.045
|
0.045
|
0.014
|
0.060
|
S355JR Mechanical Properties.
Grade
|
Thickness (mm)
|
Min Yield (Mpa)
|
Tensile (Mpa)
|
Elongation (%)
|
Min Impact Energy
|
|
S355JR
|
8mm-100mm
|
315Mpa-355Mpa
|
450-630Mpa
|
18-20%
|
20
|
27J
|
101mm-200mm
|
285-295Mpa
|
450-600Mpa
|
18%
|
20
|
27J
|
|
201mm-400mm
|
275Mpa
|
-
|
17%
|
20
|
27J
| |
