A572 and A588 structural steel plates are both high-strength, low-alloy (HSLA) steel grades used in structural applications, but they differ in their specific compositions and intended uses:
A572 Hot-Rolled Structural Steel Plate
-
Chemical Composition of A572 Carbon Steel
| Chemical | Percentage |
|---|---|
|
Iron |
98% |
|
Carbon |
0.21%–0.23% |
|
Manganese |
1.35%–1.65% |
|
Silicon |
0.15%–0.40% |
|
Sulfur |
0.03% |
|
Phosphorus |
0.03% |
- Yield/Tensile Strength of A572 Carbon Steel
|
Metric |
Imperial |
|
|
Tensile Strength, Ultimate |
450 MPa |
65,300 psi |
|
Tensile Strength, Yield |
345 MPa |
50,000 psi |
|
Elongation at Break (in 200 mm) |
18.0% |
18.0% |
|
Elongation at Break (in 50 mm) |
21.0% |
21.0% |
|
Brinell Hardness |
135 |
135 |
|
Rockwell Hardness |
74 |
74 |
|
Modulus of Elasticity |
200 GPa |
29 ksi |
|
Shear Modulus |
80 GPa |
11.6 ksi |
Grades: Various grades within the A572 structural steel plate specification (e.g., A572 Grade 50, A572 Grade 60) offer different levels of strength and other mechanical properties to suit specific application requirements.
A588 HSLA hot-rolled steel plate
| Chemical composition of A588 % | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel Grade | C | Mn | P | S | Si | Cu | Ni | Cr | V | Mo | Nb |
| A588 Grade A | ≤0.19 | 0.80-1.25 | ≤0.04 | ≤0.05 | 0.3-0.65 | 0.25-0.40 | ≤0.40 | 0.4-0.65 | 0.02-0.10 | - | - |
| A588 Grade B | ≤0.20 | 0.75-1.35 | ≤0.04 | ≤0.05 | 0.15-0.50 | 0.20-0.40 | ≤0.50 | 0.4-0.70 | 0.01-0.10 | - | - |
| A588 Grade C | ≤0.15 | 0.8-1.35 | ≤0.04 | ≤0.05 | 0.15-0.40 | 0.20-0.50 | 0.25-0.50 | 0.3-0.50 | 0.01-0.10 | - | - |
| A588 Grade K | ≤0.17 | 0.5-1.20 | ≤0.04 | ≤0.05 | 0.25-0.50 | 0.30-0.50 | ≤0.40 | 0.4-0.70 | - | ≤0.10 | 0.005-0.50 |
| ASTM A588 | Steel Plates and bars | Other shapes | ||
|---|---|---|---|---|
| ＜100mm | ≥100-125mm | ＞125-200 | ||
| Tensile strength min MPa | 485 | 460 | 435 | 485 |
| Yield strength min MPa | 345 | 315 | 290 | 345 |
| Elongation min | 21 | 21 | 21 | 21 |
Applications:A588 structural steel plate is commonly used in architectural features, bridges, transmission towers, freight cars, and other structural applications requiring enhanced corrosion resistance.
Differences
Corrosion Resistance:
A572 super thick steel plate does not have the same level of corrosion resistance as A588 HSLA hot-rolled steel due to the additional elements in A588 that provide atmospheric corrosion resistance.
Intended Use:
A572 is primarily used for structural applications requiring high strength, while A588 is specifically designed for outdoor structures subject to atmospheric corrosion.
Weathering Properties:
A588 develops a protective patina over time when exposed to the environment, enhancing its resistance to atmospheric corrosion.
When selecting between A572 and A588, consider factors such as the project's location, exposure to atmospheric conditions, desired mechanical properties, and the need for corrosion resistance to determine the most suitable material for the application at hand.
Email: alloy@gneesteelgroup.com
Whatsapp (WeChat): +86 15824687445
| Other Carbon and Low-alloy High-strength Steel | |||||
| ASTM/ASME | ASTM A36/A36M | ASTM A36 | |||
| ASTM A283/A283M | ASTM A283 Grade A | ASTM A283 Grade B | ASTM A283 Grade C | ASTM A283 Grade D | |
| ASTM A514/A514M | ASTM A514 Grade A | ASTM A514 Grade B | ASTM A514 Grade C | ASTM A514 Grade E | |
| ASTM A514 Grade F | ASTM A514 Grade H | ASTM A514 Grade J | ASTM A514 Grade K | ||
| ASTM A514 Grade M | ASTM A514 Grade P | ASTM A514 Grade Q | ASTM A514 Grade R | ||
| ASTM A514 Grade S | ASTM A514 Grade T | ||||
| ASTM A572/A572M | ASTM A572 Grade 42 | ASTM A572 Grade 50 | ASTM A572 Grade 55 | ASTM A572 Grade 60 | |
| ASTM A572 Grade 65 | |||||
| ASTM A573/A573M | ASTM A573 Grade 58 | ASTM A573 Grade 65 | ASTM A573 Grade 70 | ||
| ASTM A588/A588M | ASTM A588 Grade A | ASTM A588 Grade B | ASTM A588 Grade C | ASTM A588 Grade K | |
| ASTM A633/A633M | ASTM A633 Grade A | ASTM A633 Grade C | ASTM A633 Grade D | ASTM A633 Grade E | |
| ASTM A656/A656M | ASTM A656 Grade 50 | ASTM A656 Grade 60 | ASTM A656 Grade 70 | ASTM A656 Grade 80 | |
| ASTM A709/A709M | ASTM A709 Grade 36 | ASTM A709 Grade 50 | ASTM A709 Grade 50S | ASTM A709 Grade 50W | |
| ASTM A709 Grade HPS 50W | ASTM A709 Grade HPS 70W | ASTM A709 Grade 100 | ASTM A709 Grade 100W | ||
| ASTM A709 Grade HPS 100W | |||||
| ASME SA36/SA36M | ASME SA36 | ||||
| ASME SA283/SA283M | ASME SA283 Grade A | ASME SA283 Grade B | ASME SA283 Grade C | ASME SA283 Grade D | |
| ASME SA514/SA514M | ASME SA514 Grade A | ASME SA514 Grade B | ASME SA514 Grade C | ASME SA514 Grade E | |
| ASME SA514 Grade F | ASME SA514 Grade H | ASME SA514 Grade J | ASME SA514 Grade K | ||
| ASME SA514 Grade M | ASME SA514 Grade P | ASME SA514 Grade Q | ASME SA514 Grade R | ||
| ASME SA514 Grade S | ASME SA514 Grade T | ||||
| ASME SA572/SA572M | ASME SA572 Grade 42 | ASME SA572 Grade 50 | ASME SA572 Grade 55 | ASME SA572 Grade 60 | |
| ASME SA572 Grade 65 | |||||
| ASME SA573/SA573M | ASME SA573 Grade 58 | ASME SA573 Grade 65 | ASME SA573 Grade 70 | ||
| ASME SA588/SA588M | ASME SA588 Grade A | ASME SA588 Grade B | ASME SA588 Grade C | ASME SA588 Grade K | |
| ASME SA633/SA633M | ASME SA633 Grade A | ASME SA633 Grade C | ASME SA633 Grade D | ASME SA633 Grade E | |
| ASME SA656/SA656M | ASME SA656 Grade 50 | ASME SA656 Grade 60 | ASME SA656 Grade 70 | ASME SA656 Grade 80 | |
| ASME SA709/SA709M | ASME SA709 Grade 36 | ASME SA709 Grade 50 | ASME SA709 Grade 50S | ASME SA709 Grade 50W | |
| ASME SA709 Grade HPS 50W | ASME SA709 Grade HPS 70W | ASME SA709 Grade 100 | ASME SA709 Grade 100W | ||
| ASME SA709 Grade HPS 100W | |||||
| EN10025 | EN10025-2 | EN10025-2 S235J0 | EN10025-2 S275J0 | EN10025-2 S355J0 | EN10025-2 S355K2 |
| EN10025-2 S235JR | EN10025-2 S275JR | EN10025-2 S355JR | EN10025-2 S420J0 | ||
| EN10025-2 S235J2 | EN10025-2 S275J2 | EN10025-2 S355J2 | |||
| EN10025-3 | EN10025-3 S275N | EN10025-3 S355N | EN10025-3 S420N | EN10025-3 S460N | |
| EN10025-3 S275NL | EN10025-3 S355NL | EN10025-3 S420NL | EN10025-3 S460NL | ||
| EN10025-4 | EN10025-4 S275M | EN10025-4 S355M | EN10025-4 S420M | EN10025-4 S460M | |
| EN10025-4 S275ML | EN10025-4 S355ML | EN10025-4 S420ML | EN10025-4 S460ML | ||
| EN10025-6 | EN10025-6 S460Q | EN10025-6 S460QL | EN10025-6 S460QL1 | EN10025-6 S500Q | |
| EN10025-6 S500QL | EN10025-6 S500QL1 | EN10025-6 S550Q | EN10025-6 S550QL | ||
| EN10025-6 S550QL1 | EN10025-6 S620Q | EN10025-6 S620QL | EN10025-6 S620QL1 | ||
| EN10025-6 S690Q | EN10025-6 S690QL | EN10025-6 S690Q1 | EN10025-6 S890Q | ||
| EN10025-6 S890QL | EN10025-6 S890QL1 | EN10025-6 S960Q | EN10025-6 S960QL | ||
| JIS | JIS G3101 | JIS G3101 SS330 | JIS G3101 SS400 | JIS G3101 SS490 | JIS G3101 SS540 |
| JIS G3106 | JIS G3106 SM400A | JIS G3106 SM400B | JIS G3106 SM400C | JIS G3106 SM490A | |
| JIS G3106 SM490YA | JIS G3106 SM490B | JIS G3106 SM490YB | JIS G3106 SM490C | ||
| JIS G3106 SM520B | JIS G3106 SM520C | JIS G3106 SM570 | |||
| DIN | DIN 17100 | DIN17100 St52-3 | DIN17100 St37-2 | DIN17100 St37-3 | DIN17100 RSt37-2 |
| DIN17100 USt37-2 | |||||
| DIN 17102 | DIN17102 StE315 | DIN17102 EStE315 | DIN17102 TStE315 | DIN17102 WStE315 | |
| DIN17102 StE355 | DIN17102 EStE355 | DIN17102 TStE355 | DIN17102 WStE355 | ||
| DIN17102 StE380 | DIN17102 EStE380 | DIN17102 TStE380 | DIN17102 WStE380 | ||
| DIN17102 StE420 | DIN17102 EStE420 | DIN17102 TStE420 | DIN17102 WStE420 | ||
| DIN17102 StE460 | DIN17102 EStE460 | DIN17102 TStE460 | DIN17102 WStE460 | ||
| DIN17102 StE500 | DIN17102 EStE500 | DIN17102 TStE500 | DIN17102 WStE500 | ||
| DIN17102 EStE285 | |||||
| GB | GB/T700 | GB/T700 Q235A | GB/T700 Q235B | GB/T700 Q235C | GB/T700 Q235D |
| GB/T700 Q275 | |||||
| GB/T1591 | GB/T1591 Q345A | GB/T1591 Q390A | GB/T1591 Q420A | GB/T1591 Q420E | |
| GB/T1591 Q345B | GB/T1591 Q390B | GB/T1591 Q420B | GB/T1591 Q460C | ||
| GB/T1591 Q345C | GB/T1591 Q390C | GB/T1591 Q420C | GB/T1591 Q460D | ||
| GB/T1591 Q345D | GB/T1591 Q390D | GB/T1591 Q420D | GB/T1591 Q460E | ||
| GB/T1591 Q345E | GB/T1591 Q390E | ||||
| GB/T16270 | GB/T16270 Q550C | GB/T16270 Q550D | GB/T16270 Q550E | GB/T16270 Q550F | |
| GB/T16270 Q620C | GB/T16270 Q620D | GB/T16270 Q620E | GB/T16270 Q620F | ||
| GB/T16270 Q690C | GB/T16270 Q690D | GB/T16270 Q690E | GB/T16270 Q690F | ||
| GB/T16270 Q800C | GB/T16270 Q800D | GB/T16270 Q800E | GB/T16270 Q800F | ||
| GB/T16270 Q890C | GB/T16270 Q890D | GB/T16270 Q890E | GB/T16270 Q890F | ||
| GB/T16270 Q960C | GB/T16270 Q960D | GB/T16270 Q960E | GB/T16270 Q960F | ||
| GB/T16270 Q500 | |||||
