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ASTM A193 B6

Chemical compositions and mechanical compositions for ASTM A193 B6.

Chemical Compositions - ASTM A193 B6

Chemical CompositionB6
Carbon0 – 0.15%
Manganese0 – 1.00%
Phosphorus, max0 – 0.040%
Sulfur, max0 – 0.03%
Silicon0 – 1.00%
Chromium11.5 – 13.5%
Nickel-
Molybdenum-

Mechanical Properties - ASTM A193 B6

Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa)760
Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa)585
Elongation in 4D (El)15
Reduction50
Hardness – (BHN)0

ASTM A193 B7

Chemical compositions and mechanical properties for ASTM A193 B7.

Chemical Compositions - ASTM A193 B7

ElementsRangeProduct Variation, Over or Under B
Carbon0.37-0.49 % D0.02%
Manganese, max0.65-1.10 %0.04%
Phosphorus, max0.035%0.005 % over
Sulfur, max0.04%0.005 % over
Silicon0.15 - 0.35 %0.02%
Chromium0.75-1.20 %0.05%
Molybdenum0.15-0.25 %0.02%

Mechanical Properties (Metric) - ASTM A193 B7

Diameter mmMin Tempering Temperature, °CTensile Strength min, MPaYield strength, min, 0.2% offset, MPaElongation in 4D min, %Reduction of Area, min, %Hardness, max
M64 and Under5938607201650321 HBW or 35 HRC
over M64 to M1005937956551650321 HBW or 35 HRC
over M100 to M1805936905151850321 HBW or 35 HRC

Mechanical Properties (Imperial) - ASTM A193 B7

Diameter InchMin Tempering Temperature, °CTensile Strength min, ksiYield strength, min, 0.2% offset, ksiElongation in 4D min, %Reduction of Area, min, %Hardness, max
2.5 and under11001251051650321 HBW or 35 HRC
over 2.5 to 41100115951650321 HBW or 35 HRC
over 4 to 71100100751850321 HBW or 35 HRC

ASTM A193 B7M

Chemical compositions and mechanical properties for ASTM A193 B7M.

Chemical Compositions - ASTM A193 B7M

ElementsRangeProduct Variation, Over or Under B
Carbon0.37-0.49 % D0.02%
Manganese, max0.65-1.10 %0.04%
Phosphorus, max0.035%0.005 % over
Sulfur, max0.04%0.005 % over
Silicon0.15 - 0.35 %0.02%
Chromium0.75-1.20 %0.05%
Molybdenum0.15-0.25 %0.02%

ASTM A193 B8 (CLASS 1 & CLASS 2)

Chemical compositions and mechanical properties for ASTM A193 B8 (CLASS 1 & CLASS 2).

Chemical Compositions - ASTM A193 B8 (CLASS 1 & CLASS 2)

Element% Present
Carbon (C)0.07
Silicon (Si)1
Manganese (Mn)2
Phosphorous (P)0.045
Sulfur (S)0.0151)
Chromium (Cr)16.50 - 18.50
Nickel (Ni)10.00 - 13.00
Nitrogen (N)0.1
Molybdenum (Mo)2.00 - 2.50
Iron (Fe)Balance

Mechanical Properties - ASTM A193 B8 (CLASS 1 & CLASS 2)

GradeSizeTensile ksi, minYield, ksi, minYield, ksi, minRA % minHBWRockwell
Up to 2-1/21251051650321 max35 HRC max
2-5/8 - 4115951650321 max35 HRC max
4-1/8 - 7100751850321 max35 HRC max
B8 Class 1All75303050223 max96 HRB max
Up to 3/41251001235321 max35 HRC max
7/8/2001115801535321 max 35 HRC max
1-1/8 - 1-1/4105652035321 max35 HRC max
B8 Class 21-3/8 - 1-1/2100502845321 max35 HRC max

ASTM A193 B8T (CLASS 1 & CLASS 2)

Chemical compositions and mechanical properties for ASTM A193 B8T (CLASS 1 & CLASS 2).

Chemical Compositions - ASTM A193 B8T (CLASS 1 & CLASS 2)

Property class CMnSiPSCrNiMoVTi
B8T0.08 max.2.00 max.1.00 max.0.045 max.0.030 max.17.00-9.009.00-12.00--5xCMIN

Mechanical properties (Inch product) - ASTM A193 B8T (CLASS 1 & CLASS 2)

Class, Diameter InHeat TreatmentBTensile Strength, min, ksiYield Strength, min, 0.2 % offset, ksiElongation in 4 D, min % Reduction of Area, min % Hardness, max
B8Tcarbide solution treated75303050 223 HBC or 96 HRB

Mechanical properties (Metric product) - ASTM A193 B8T (CLASS 1 & CLASS 2)

Class, Diameter mmHeat TreatmentBTensile Strength, min, ksiYield Strength, min, 0.2 % offset, ksiElongation in 4 D, min % Reduction of Area, min % Hardness, max
B8Tcarbide solution treated5152053050223 HBC or 96HRB

ASTM A193 B8C (CLASS 1 & CLASS 2)

Chemical compositions and mechanical properties for ASTM A193 B8C (CLASS 1 & CLASS 2).

Chemical Compositions - ASTM A193 B8C (CLASS 1 & CLASS 2)

Austenitic Steels, Classes 1, 1A, 1D, and 2Austenitic Steels, Classes 1, 1A, 1D, and 2
ElementGrade B8C, B8CA
Carbon, max0.08
Manganese, max2
Phosphorus, max0.045
Sulfur, max0.03
Silicon, max1
Chromium17.0-19.0
Molybdenum--
Columnium + Tantalum10 x carbon content, min – 1.10 max

Mechanical properties - ASTM A193 B8C (CLASS 1 & CLASS 2)

GradeDiameterTensile StrengthYield StrengthElongationReductionHardness
Grade B8CM20 and under8606901235321 HBW or 35 HRC
Grade B8CM20 to M24, inclusive6905502045321 HBW or 35 HRC
Grade B8CM24 to M30, inclusive6554502545321 HBW or 35 HRC
Grade B8CM30 to M36, inclusive6203453045321 HBW or 35 HRC

ASTM A193 Grade B16

Chemical compositions and mechanical properties for ASTM A193 Grade B16.

Chemical Compositions - ASTM A193 Grade B16

ElementsRangeProduct Variation, Over or Under [NOTE]
Carbon0.36 - 0.47%0.02
Manganese, max0.45 - 0.70%0.03
Phosphorus, max0.035%0.005 over
Sulfur, max0.04%0.005 over
Silicon0.15 - 0.35%0.02
Chromium0.80 - 1.15%0.05
Molybdenum0.50 - 0.65%0.05
Vanadium0.25 - 0.35%0.03
Aluminium, Max0.015%...

Mechanical Properties (Metric) - ASTM A193 Grade B16

Diameter mmMin Tempering Temperature, °CTensile Strength min, MPaYield strength, min, 0.2% offset, MPaElongation in 4D min, %Reduction of Area, min, %Hardness, max
M64 and Under6508607251850321 HBW or 35 HRC
over M64 to M1006507606551745321 HBW or 35 HRC
over M100 to M1806506905851645321 HBW or 35 HRC

Mechanical Properties (Imperial) - ASTM A193 Grade B16

Diameter InchMin Tempering Temperature, °CTensile Strength min, ksiYield strength, min, 0.2% offset, ksiElongation in 4D min, %Reduction of Area, min, %Hardness, max
2.5 and under12001251051850321 HBW or 35 HRC
over 2.5 to 41200110951745321 HBW or 35 HRC
over 4 to 71200100851645321 HBW or 35 HRC

ASTM A320 L7

Chemical compositions and mechanical properties for ASTM A320 L7.

Chemical Compositions - ASTM A320 L7

ElementsContent, %Allowable Variation, Over or Under, %
Carbon0.08 max0.01 over
Manganese2.00 max0.04
Phosphorus0.04 max0.005 over
Sulfur0.03 max0.005 over
Silicon1.00 max0.05
Nickel24.00 - 27.000.2
Chromium13.50 - 16.000.2
Molybdenum1.00 - 1.500.05
Titanium1.90 - 2.350.05
Aluminum0.35 max0.05 over
Vanadium0.10 - 0.500.03
Boron0.001 - 0.0100.0004 under to 0.001 over

Mechanical Properties - ASTM A320 L7

Tensile ClassTensile Strength, minTensile Strength, minYield strength, 0.2% offset, minYield strength, 0.2% offset, minElongation in 4D min, %Reduction of Area, min, %
ksiMPaksiMPa
A, B and C130895855851518
D1308951057251518

Mechanical properties (Hardness) - ASTM A320 L7

Tensile ClassBrinell Hardness NumberApproximate Rockwell Hardness B & CApproximate Rockwell Hardness B & C
minmax
A, B and C248 - 34124 HRC27 HRC
D248 - 32124 HRC 35 HRC

Mechanical properties (Stress Rupture Requirements) - ASTM A320 L7

Tensile ClassTest Temperature °F [°C]Stress, minStress, minTime to Rupture, min, h [Note]Elongation, min, %
ksiMpa
A, B and C 1200 [650]563851005
D1200 [650]402751005

ASTM A320 L7M

Chemical compositions and mechanical properties for ASTM A320 L7M.

Chemical compositions - ASTM A320 L7M

CSiMNPSCRMOJOULESTEMPERATURE
0.38-0.480.15-0.350.75-1.000.035 MAX0.040 MAX0.80-1.100.15-0.2527-73

Mechanical properties - ASTM A320 L7M

YIELD STRENGTHTENSILE STRENGTHELONGATON REDUCTION HARDNESS
MIN 0.2% MPAMIN MPAMIN %MIN %HRB MAX
5506901850235

ASTM A320 L43

Chemical compositions and mechanical properties for ASTM A320 L43.

Chemical compositions - ASTM A320 L43

ELEMENTCOMPOSITION % A
NICKEL- CHROMIUM- MOLYBDENUM (AISI 4340)
CARBON, MAX0.38-0.43
MANGANESE0.60-0.85
PHOSPHORUS, MAX0.035
SULFUR, MAX0.04
SILICON 0.15-0.35
NICKEL1.65-2.00
CHROMIUM0.70-0.90
MOLYBDENUM0.20-0.30

Mechanical properties - ASTM A320 L43

DIAMETER IN (MM)TENSILE STRENGTH MIN, KSI (Mpa) YIELD STRENGTH MIN, KSI (Mpa) 0.2% OFFSETELONGATION IN 2 INCH OR 50MM, MIN%REDUCTION OF AREA MIN %HARDNESS MAX
4 (100) AND UNDER1100 (593)125 (860)1650HBW 321/HRC 35

Mechanical properties (Impact test requirements) - ASTM A320 L43

SIZE OF SPECIMEN (MM)TEST TEMPERATUREMIN IMPACT SET FT-LBFMIN IMPACT ONE SET FT-LBF
10X10F (-150) C(-101)20(27)15 (20)
10X7.516(22)12 (16)

ASTM A194 2HM

Chemical compositions and mechanical properties for ASTM A194 2HM.

Mechanical properties - ASTM A194 2HM

ELEMENENTCSiMNPS
MIN0.15
MAX0.410.040..05

Mechanical properties - ASTM A194 2HM

COMPLETED NUTSBHN159-235
COMPLETED NUTSHRB84-99
SAMPLE NUTS AFTER HEAT TREATMENTBHN MIN159
SAMPLE NUTS AFTER HEAT TREATMENTHRB MIN84

ASTM A194 7

Chemical compositions and mechanical properties for ASTM A194 7.

Chemical compositions - ASTM A194 7

FERRITIC STEEL- CHROMIUM, MOLYBDENUM, ALLOY STEEL
CARBON, MAX0.37-0.49
MANGANESE0.65-1.10
PHOSPHORUS, MAX0.035 MAX
SULFUR, MAX0.04
SILICON0.15-0.35
NICKEL1.65-2.00
CHROMIUM0.75-1.20
MOLYBDENUM0.15-0.25

Mechanical properties - ASTM A194 7

HARDNESS BHNROCKWELL HARDNESSHARDNESS BHN MINHARDNESS HRB MIN
248-32724-3520194

ASTM A194 7M

Chemical compositions and mechanical properties for ASTM A194 7M.

Chemical Compositions - ASTM A194 7M

FERRITIC STEEL- CHROMIUM, MOLYBDENUM, ALLOY STEEL
CARBON, MAX0.37-0.49
MANGANESE0.65-1.10
PHOSPHORUS, MAX0.035 MAX
SULFUR, MAX0.04
SILICON0.15-0.35
NICKEL-
CHROMIUM0.75-1.20
MOLYBDENUM0.75-1.20

Mechanical properties - ASTM A194 7M

HARDNESS BHN
248-327

A193 Grade B8R

Chemical compositions and mechanical properties for A193 Grade B8R.

Chemical Compositions - A193 Grade B8R

Carbon0.15 max
Chromium16.5 – 19.5
IronBalance
Manganese11 – 14
Nickel11 – 14
Nitrogen0.2 – 0.45
Phosphorus0.06 max
Silicon1 max
Sulphur0.03 max

Mechanical properties - A193 Grade B8R

PropertiesMetric
Tensile strength690 MPa
Yield strength379 MPa
Elongation at break30%
Rockwell B hardness92

ASTM A194 8

Chemical compositions and mechanical properties for ASTM A194 8.

Chemical compositions - ASTM A194 8

ElementASTM A194 Grade 8
CarbonCarbon
Manganese2.00 Max
Phosphorus, max0.05%
Sulfur, max0.03%
Silicon1.00% max
Chromium18.0-20.0%
Nickel8.0-11.0%
Molybdenum-

Mechanical properties - ASTM A194 8

Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa)550
Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa)240
Elongation in 4D (El)30
Reduction40
Hardness – (BHN)223

ASTM A194 8A

Chemical compositions and mechanical properties for ASTM A194 8A.

Chemical Compositions - ASTM A194 8A

Carbon0.15 max
Chromium16.5 – 19.5
IronBalance
Manganese11 – 14
Nickel0.5 – 2.5
Nitrogen0.2 – 0.45
Phosphorus0.06 max
Silicon1 max
Sulphur0.03 max

Mechanical properties - ASTM A194 8A

PropertiesMetric
Tensile strength690 MPa
Yield strength379 MPa
Elongation at break30%
Rockwell B hardness92

A194 Grade 8M

Chemical compositions and mechanical properties for A194 Grade 8M.

Chemical Compositions - A194 Grade 8M

Carbon0.15 max
Chromium16.5 – 19.5
IronBalance
Manganese11 – 14
Nickel0.5 – 2.5
Nitrogen0.2 – 0.45
Phosphorus0.06 max
Silicon1 max
Sulphur0.03 max

Mechanical properties - A194 Grade 8M

PropertiesMetric
Tensile strength690 MPa
Yield strength379 MPa
Elongation at break30%
Rockwell B hardness92

ASTM A194 8MA

Chemical compositions and mechanical properties for ASTM A194 8MA.

Chemical compositions - ASTM A194 8MA

CSiMnPSCrMoNi
0.08 Max1.00 Max2.00 Max0.045 Max0.030 Max16.0-18.02.00-3.0010.0-14.0

Mechanical properties - ASTM A194 8MA

BHNHRBHRC
126-19260-90-

ASTM A194 8T

Chemical compositions and mechanical properties for ASTM A194 8T.

Chemical Compositions - ASTM A194 8T

Carbon0.15 max
Chromium16.5 – 19.5
IronBalance
Manganese11 – 14
Nickel0.5 – 2.5
Nitrogen0.2 – 0.45
Phosphorus0.06 max
Silicon1 max
Sulphur0.03 max

Mechanical properties - ASTM A194 8T

PropertiesMetric
Tensile strength690 MPa
Yield strength379 MPa
Elongation at break30%
Rockwell B hardness92

ASTM A540 GRADE B21

Chemical compositions and mechanical properties of ASTM A540 GRADE B21.

Chemical compositions - ASTM A540 GRADE B21

ElementGrade B21
ElementCr-Mo-V
ElementChrome Moly Vanadium
ElementRangeB, %
Carbon0.35 - 0.44
Manganese0.45 - 0.70
PhosphorusC, max0.025
SulfurC, max0.025
Silicon0.15 - 0.35
Chromium0.80 - 1.15
Nickel--
Molybdenum0.50 - 0.65
Vanadium0.25 - 0.35

Mechanical Properties - ASTM A540 GRADE B21

GradesClassDiameter, inch.Tensile Strength, minYield Strength,ElongationReductionSurface/ Brinell/ HardnessSurface/ Brinell/ HardnessCharpy V Notch +10 °F [-12.2 °C]
Inch Pound Units0.2% offset,Elongationof Area, min, %MinMax
min
ksiksiIn 2 inch.
Grade B21 (Cr-Mo-V)5to 2, incl.1201051550241285D
5over 2 to 6, incl.1151001550248302D
5over 6 to 8, incl.1151001550255311D
4to 3, incl.1351201345269331D
4over 3 to 6, incl.1351201345277352D
3to 3, incl.1451301240293352D
3over 3 to 6, incl.1451301240308375D
2to 4, incl.1551401140311401D
1to 4, incl.1651501035321429D

ASTM A540 GRADE B22

Chemical compositions and mechanical properties of ASTM A540 GRADE B22.

Chemical compositions - ASTM A540 GRADE B22

ElementGrade B22
Element4142-H
ElementChrome Moly
ElementRangeB, %
Carbon0.39 - 0.46
Manganese0.65 - 1.10
PhosphorusC, max0.025
SulfurC, max0.025
Silicon0.15 - 0.35
Chromium0.75 - 1.20
Nickel--
Molybdenum0.15 0.25
Vanadium--

Mechanical properties - ASTM A540 GRADE B22

GradesClassDiameter, inch.Tensile Strength, minYield Strength,ElongationReductionSurface/ Brinell/HardnessSurface/ Brinell/HardnessCharpy V Notch +10 °F [-12.2 °C]
Inch Pound Units0.2% offset, minmin, %of Area, min, %mInmax
ksiksiIn 2 inch
Grade B22 (4142-H)5to 2, incl.1201051550248293A
Grade B22 (4142-H)5over 2 to 4, incl.1151001550255302D
Grade B22 (4142-H)4to 1, incl.1351201345269341A
Grade B22 (4142-H)4over 1 to 4, incl.1351201345277363D
Grade B22 (4142-H)3to 2, incl.1451301240293363D
Grade B22 (4142-H)3over 2 to 4, incl.1451301240302375D
Grade B22 (4142-H)2to 3, incl.1551401140311401D
Grade B22 (4142-H)1to 1-1/2, incl.1651501035321401D

ASTM A540 GRADE B23

Chemical compositions and mechanical properties of ASTM A540 GRADE B23.

Chemical compositions - ASTM A540 GRADE B23

ElementGrade B23
ElementE-4340-H
ElementChrome Nickel Vanadium
ElementRangeB, %
Carbon0.37 - 0.44
Manganese0.60 - 0.95
PhosphorusC, max0.025
SulfurC, max0.025
Silicon0.15 - 0.35
Chromium0.65 - 0.95
Nickel1.55 - 2.00
Molybdenum0.20 - 0.30
Vanadium--

Mechanical properties - ASTM A540 GRADE B23

GradesClassDiameter, inch.Tensile Strength, minYield Strength,ElongationReductionSurface/ Brinell/ HardnessSurface/ Brinell/ HardnessCharpy V Notch +10 °F [-12.2 °C]
Inch Pound Units0.2% offset, min min, %of Area, min, %min max
ksiksiIn 2 inch.
Grade B23 (E-4340-H)5to 6, incl.1201051550248311A
Grade B23 (E-4340-H)5over to 8, incl.1151001550255321A
Grade B23 (E-4340-H)5over 8 to 9-1/2, incl.1151001550262321D
Grade B23 (E-4340-H)4to 3, incl.1351201345269341A
Grade B23 (E-4340-H)4over 3 to 6, incl.1351201345277352A
Grade B23 (E-4340-H)4over 6 to 9-1/2, incl.1351201345285363D
Grade B23 (E-4340-H)3to 3, incl.1451301240293363B
Grade B23 (E-4340-H)3over 3 to 6, incl.1451301240302375B
Grade B23 (E-4340-H)3over 6 to 9-1/2, incl.1451301240311388D
Grade B23 (E-4340-H)2to 3, incl.1551401140311388D
Grade B23 (E-4340-H)2over 3 to 6, incl.1551401140311401D
Grade B23 (E-4340-H)1to 3, incl.1651501035321415D
Grade B23 (E-4340-H)1over 3 to 6, incl.1651501035331429D
Grade B23 (E-4340-H)1over 6 to 8, incl.1651501035341444D

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