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High Yield Strength, Quenched & Tempered Alloy Steel Plates
 

A-514

Overview

A very popular grade used extensively within the construction industry in earth moving equipment, building / support apparatus, truck frames / bodies, oil rigs, booms, and drilling equipment just to name a few. This quenched and tempered HSLA (High Strength Low Alloy) product have both tensile / yield properties at min 100ksi.

 

 Download A-514 Chemical and Tensile Requirements PDF (85 KB)

Chemical Requirements

ElementsGrade A, %
1-1/4 (32)
Grade B, %
1-1/4 (32)
Grade C, %
1-1/4 (32)
Grade E, %
6 (150)
Grade F, %
2-1/2 (65)
Grade H, %
2 (50)
Grade J, %
1-1/4 (32)
Carbon 0.15-0.21 0.12-0.21 0.10-0.20 0.12-0.20 0.10-0.20 0.12-0.21 0.12-0.21
Manganese 0.80-1.10 0.70-1.00 1.10-1.50 0.40-0.70 0.60-1.00 0.95-1.30 0.45-0.70
Phosphorus, max 0.035 0.035 0.035 0.035 0.035 0.035 0.035
Sulfur, max 0.04 0.04 0.04 0.04 0.04 0.04 0.04
Silicon 0.40-0.80 0.20-0.35 0.15-0.30 0.20-0.40 0.15-0.35 0.20-0.35 0.20-0.35
Nickel - - - - 0.70-1.00 0.30-0.70 -
Chromium 0.50-0.80 0.40-0.65 - 1.40-2.00 0.40-0.65 0.40-0.65 -
Molybdenum 0.18-0.28 0.15-0.25 0.15-0.30 0.40-0.60 0.40-0.60 0.20-0.30 0.50-0.65
Vanadium - 0.03-0.08 - A 0.03-0.08 0.03-0.08 -
Titanium - 0.01-0.03 - 0.01-0.10 - - -
Zirconium 0.05-0.15B - - - - - -
Copper - - - - 0.15-0.50 - -
Boron 0.0025 max 0.0005-0.005 0.001-0.005 0.001-0.005 0.0005-0.006 0.0005-0.005 0.001-0.005
Columbium, max - - - - - - -



ElementsGrade M, %
2 (50)
Grade P, %
6 (150)
Grade Q, %
6 (150)
Grade R, %
2-1/2 (65)
Grade S, %
2 (50)
Grade T, %
2 (50)
Carbon 0.12-0.21 0.12-0.21 0.14-0.21 0.15-0.20 0.10-0.20 0.08-0.14
Manganese 0.45-0.70 0.45-0.70 0.95-1.30 0.85-1.15 1.10-1.50 1.20-1.8
Phosphorus, max 0.035 0.035 0.035 0.035 0.035 0.035
Sulfur, max 0.04 0.04 0.04 0.04 0.04 0.010
Silicon 0.20-0.35 0.20-0.35 0.15-0.35 0.20-0.35 0.15-0.35 0.40-0.60
Nickel 1.20-1.50 1.20-1.50 1.20-1.50 0.90-1.10 - -
Chromium - 0.85-1.20 1.00-1.50 0.35-0.65 - -
Molybdenum 0.45-0.60 0.45-0.60 0.40-0.60 0.15-0.25 0.10-0.35 0.45-0.60
Vanadium - - 0.03-0.08 0.03-0.08 - 0.03-0.08
Titanium - - - - c -
Zirconium - - - - - -
Copper - - - - - -
Boron 0.001-0.005 0.001-0.005 - - 0.001-0.005 0.001-0.005
Columbium, max - - - - 0.06 -

aMay be substituted for part or all titanium content on a one for one basis.
bZirconium may be replaced by cerium. When cerium is added, the cerium/sulfur ratio should be approximately 1.5 to 1, based upon heat analysis.
cTitanium may be present in levels up to 0.06% to protect the boron additions.

Tensile & Hardness Requirements

NOTE 1 - On plates wider than 24 in. (600 mm), the test specimen shall be taken in the transverse direction. (See Section 10 and Specification A 6/A 6M)
NOTE 2 - Either the full thickness rectangular specimen shown in Fig. 3 of the Methods and Definitions A 370, or the 1/2-in. (12.5-mm) diameter specimen shown in Fig. 4 of Methods and Definitions A 370 may be used for plates over 3/4 to 1-1/2 in. (20 to 40 mm) in thickness.

Thickness, in. (mm)Ultimate Tensile Strength ksi (MPa)Yield StrengthA min, ksi (MPa)Elongation in 2 in. (50 mm), B,C,D,EReduction of Area,B,CBrinell HardnessF Number
To 3/4 (20), incl 110 to 130 (760 to 895) 100 (690) 18 40G 235 to 293
Over 3/4 to 2-1/2 (20 to 65), incl 110 to 130 (760 to 895) 100 (690) 18 40G, 50H -
Over 2-1/2 to 6 (65 to 150), incl 100 to 130 (690 to 895) 90 (620) 16 50H -

AMeasured at 0.2% offset or 0.5% extension under load as described in the Determination of Tensile Properties section of Methods and Definitions A 370.
BElongation and reduction of area not required to be determined for floor plates.
CFor plates tested in the transverse direction, the elongation minimum percent is reduced by 2% and the reduction of area minimum requirement is reduced by 5%.
DWhen measured on the Fig. 3 (Methods and Definitions a 370) 1-1/2 in. (40mm) wide specimen (see Note 2 of this table), the elongation is determined in a 2 in. (50-mm) gage length which includes the fracture and shows the greatest elongation.
EFor nominal thickness under 5/16 in. (8 mm), a deduction from the specified percentage of elongation shall be made for decreases of the nominal thickness below 5/16 in (8 mm). See elongation requirement adjustments under the Tension Tests section of Specification A 6/A 6M, for deduction values. However, the deduction may not exceed 3%.
FSee Section 8 of this specification.
GWhen measured on the Fig. 3 (Methods and Definitions A 370) 1-1/2 in.(40mm) wide, specimen (see Note 2 of this table).
HWhen measured on the Fig. 4 (Methods and Definitions A 370) 1-1/2 in.(12.5mm) round specimen (see Note 2 of this table).