Carbon Steel Sheets and Plates

 

Chemistry (General)

Mechanical Properties

Common Name

ASTM Spec.

C max

Mn max

P max

S max

Si max

Tensile Strength

ksi

Yield Strength

ksi

Elong.  In 2”

Brinell

*

Typical Applications

Mild Steel, CQ - Commercial Quality

A569

.15

.60

.030

.035

N/A

52 *

30 to 50

25% min.

108

This material is intended for parts where bending, moderate forming or drawing, and welding may be involved. Used for tanks, barrels, farm implements, etc.

A36, Structural Quality

A36

.25*

.80 – 1.20*

.040

.050

.40

58 to 80

36 min.

23% min.

119 to 159

Used in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.

Grade 50,

HSLA, High Strength - Low Alloy

A572

A607

A715

A936

.23

.23

.15

.15

1.35

1.35

1.65

1.65

.040

.040

.020

.025

.050

.040

.025

.035

.400

N/A

N/A

N/A

65 min

65 min

60 min

60 min

50 min

50 min

50 min

50 min

21%

22%

24%

22%

135 min.

Used when higher strength, savings in weight, improved formability and weldability are important.  Often used in heavy equipment, truck frames and components.

Grade 80,

HSLA, High Strength - Low Alloy

A656

A715

A936

.18

.15

.15

1.65

1.65

1.65

.025

.020

.025

.035

.025

.035

.600

N/A

N/A

90 min

90 min

90 min

80 min

80 min

80 min

15%

18%

12%

190 min.

Used for the same reasons as grade 50 material, with an even better strength to weight ratio.  Often used in truck frames, crane booms, and rail cars.

Cor-ten, HSLA corrosion resistant

A588 B

A606

.20

.22

1.35

1.25

.04

N/A

.05

.04

.50

N/A

70 min

70 min

50 min

50 min

21%

22%

147 min.

Same basic properties as other HSLA steels with added resistance to corrosion.  Often used in bridges or structures where maintenance cost considerations are important.

T-1, Construction Alloys

A514 B

.12 - .21

.70 – 1.00

.035

.035

.20 - .35

110 to 130

100 min

18%

228 min.

Nearly 3 times as strong as A36.  Used as liners for construction equipment, mining machinery, chutes, wear plates, etc.

AR200, ARTN

Abrasion Resistant

N/A

.32 to .36

.90 to 1.30

.35

.05

.04

90 min

15%

185 to 235

Primarily used for liners of refuse trucks, cement mixers, mining equipment etc.


 

 

Grade 50 Comparisons

 

Chemistry (General)

Mechanical Properties

ASTM Spec.

ASTM Spec.

C max

Mn max

P max

S max

Si max

Tensile Strength

ksi

Yield Strength

ksi

Elong.  In 2”

Brinell

*

Min. Bend Radius

A570

Structural Steel, Sheet and Strip, Carbon, Hot Rolled

.25

1.35

.035

.040

N/A

65 min

50 min.

17%

2 ½ T

A572

High Strength Low-Alloy Columbium-Vanadium Structural Steel

.23

1.35

.040

.050

.400

65 min

50 min

21%

135 min.

2 t

A607

Class 1

Steel Sheet and Strip, High Strength, Low-Alloy Columbium or Vanadium, or Both, Hot-Rolled and Cold-Rolled

.23

1.35

.040

.040

N/A

65 min

50 min

20%

2 t

A935

Type 1

Steel Sheet and Strip, Heavy Thickness Coils, High Strength, Low-Ally, Columbium or Vanadium, or Both, Hot Rolled

.23

1.50

.040

.040

N/A

65 min

50 min

20

2 t

 

Improved Formability Below

A656

Type 3

Hot-Rolled Structural Steel, High Strength Low-Alloy Plate with Improved Formability

.18

1.65

.025

.035

.600

60 min

50 min

23%

1 t

A715

Steel, Sheet and Strip, High Strength, Low-Alloy, Hot Rolled, Cold Rolled with Improved Formability

.15

1.65

.020

.025

N/A

60 min.

50 min.

24%

1 t

A936

Steel, Sheet and Strip, Heavy Thickness Coils, High Strength, Low-Alloy, Hot Rolled, with Improved Formability

.15

1.65

.025

.035

N/A

60 min

50 min.

22%

1 t

                                                                                                                            60

 

 

 

 

AR-400

This steel is heat treated to produce a high strength, high hardness product with a Brinell Hardness range of 360 to 440.

 

Recommended Fabricating Practices for Cold Forming

(Bend axis transverse (perpendicular) to rolling direction “across the grain”)*

Suggested inside Radii for 90 degree bends for various thicknesses expressed in terms of “t” where t = material thickness

 
Steel
A36 – 36,000 psi Minimum Yield Strength

Thru .250”                   1t

.250 to .500”               1 ½t

.500 to 1.00”               2t

 

Grade 50 – 50,000 psi Minimum Yield Strength

(ASTM - A570, A572, A607, and A935)

Thru .187”                   1 ½t

.187 thru .229”                        2t

.187 thru .500”                        2 ½t

 

Grade 50 - Improved Formability– 50,000 psi Minimum Yield Strength (ASTM - A656 T3, A715, and A936)

Thru .500”                   1t

 

Grade 80 – 80,000 psi Minimum Yield Strength (ASTM A656)

Thru .250”                   2 ½t

Over .250”                   3t

 

AR200 - 70,000 psi Typical Yield Strength (No ASTM exists)

Thru .187”                   1 ½t

.187 thru .229”                        2t

.187 thru .500”                        2 ½t

 

T1 – 100,000 psi Minimum Yield Strength (ASTM A514 Gr B)

Thru .250”                   2t

.250 to .500”               2 ½t

.500 to 1.00”               3t

 

AR400 – 155,000 psi Typical Yield Strength (No ASTM exists)

Thru .787”                   3t  (use 13.5t bottom die opening)

Over .787”                   4t  (use 18t bottom die opening)

 
 
Aluminum

3003 - H14

Thru .062”                   ½ t

Over .062”to .188”      1t

Over .188” to .250”     1 ½ t

Over .250 to .500”       2t

 

 

5052 – H32

Thru .062”                   1t

Over .062”thru .375”   1 ½ t

Over .375” to .500”     2t

 

6061 – T6

Thru .031”                   1t

Over .031” thru .062”  1 ½ t

Over .062” thru .125”  2 ½ t

 

 

* Larger minimum radii should be used for bending parallel to the rolling direction “with the grain”.

**  The radii listed are the minimum recommended for bending sheets and plates without fracturing in a standard press brake with air bend dies.  Other types of bending operations may require larger radii or permit smaller radii.  The minimum permissible radii will also vary with the design and condition of the tooling.

***  Before bending, special attention should be paid to the condition of the plate edges transverse to the bend lines.  Flame cut edges of hardenable steels should be machined or softened by heat treatment.  Nicks should be ground out and sharp corners should be rounded.