Material Grades

Carbon Steel Material Grades


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EN3A (070M20)

Chemical compositions and mechanical properties for EN3A (070M20).

Chemical compositions - EN3A (070M20)

CSiMnSP
0.16/0.24 0.10/0.40 0.50/0.90 0.050 MAX 0.050 MAX

Mechanical properties - EN3A (070M20)

TEN. STRENTHYIELD STRESSELONGBHN
430 N/MM2300 N/MM221%140

EN8 (080M20)

Chemical compositions and mechanical properties for EN8 (080M20).

Chemical compositions - EN8 (080M20)

StandardGrade CMnPSSi
BS 970BS 970EN8/080M400.36-0.440.60-1.000.050.0050.10-0.40

Mechanical properties - EN8 (080M20)

Heat TreatmentTensile Strength RmYield StrengthRp 0.2A min onImpactImpactHardness
Rm5.65√SoIzod Ft.lbKCV JHB
MPaMPaMPa
N550280-161516152/207
N510245-17--146/197
Q625/775385355162528179/229
R700/850465450162528201/255

EN8D (080A42)

Chemical compositions and mechanical properties for EN8D (080A42).

Chemical compositions - EN8D (080A42)

CSiMNSP
0.40/0.45 0.40 MAX 0.70/0.90 0.050 MAX 0.050 MAX

EN16 (605M36)

Chemical compositions and mechanical properties for EN16 (605M36).

Chemical compositions - EN16 (605M36)

CSiMnSPCrNiMo
Min0.320.11.30.22
Max0.40.41.70.040.0350.3

Mechanical properties - EN16 (605M36)

Yield0.2% proofUTS (Rm)Elong (A)Red of Area (Z)HardnessImpact Test (KV)
N/mm2N/mm2N/mm2%%HBJ
Quenched & Tempered to condition R (min)495-70015-20128
Quenched & Tempered to condition R (max)--850--255-
Quenched & Tempered to condition S (min)585-77515-22350
Quenched & Tempered to condition S (max)--925--277-
Quenched & Tempered to condition T (min)680-85013-24850
Quenched & Tempered to condition T (max)--1000--302-
Drawn, Quenched & Tempered to condition T (min)700-8509-24850
Drawn, Quenched & Tempered to condition T (max)--1000--302-

EN19 (708M40)

Chemical compositions and mechanical properties for EN19 (708M40).

Chemical compositions - EN19 (708M40)

GradeCSiMnPSCrMo
EN190.35-0.450.10-0.350.50-0.80≤ 0.050≤ 0.0500.90-1.500.20-0.40
708M400.36-0.440.10-0.400.70-1.00≤ 0.035≤ 0.0400.90-1.200.15-0.25
709M400.36-0.440.10-0.400.70-1.00≤ 0.035≤ 0.0400.90-1.200.25-0.35

EN24 (817M40)

Chemical compositions and mechanical properties for EN24 (817M40).

Chemical compositions - EN24 (817M40)

CSiMnPSCrMoNi
0.36/0.44-0.45/0.700.0350.0351.00/1.400.20/0.351.30/1.70

Mechanical properties - EN24 (817M40)

Yield strength - Size Yield strength - Mpa
> 29 ≤ 100755
Tensile strength - SizeTensile strength - Mpa
> 29 ≤ 100925/1075
% ElongationImpact energy JoulesHBW hardness
1242269/331

EN26 (826M40)

Chemical compositions and mechanical properties for EN26 (826M40).

Chemical Compositions - EN26 (826M40)

CSiMnSPCrNiMo
Min0.360.10.45--0.52.30.45
Max0.440.350.70.040.0350.82.80.65

Mechanical properties - EN26 (826M40)

Yield0.2% proofUTS (Rm)Elong (A)Red of Area (Z)HardnessImpact Test (KV)
N/mm2N/mm2N/mm2%%HBJ
Quenched & Tempered to condition U (min)755-92512-26942
Quenched & Tempered to condition U (max)--1075--331-
Quenched & Tempered to condition V (min)850-100012-29342
Quenched & Tempered to condition V (max)--1150--352-
Quenched & Tempered to condition W (min)940-107511-31135
Quenched & Tempered to condition W (min)--1225--375-
Quenched & Tempered to condition X (max)1020-115010-36328
Quenched & Tempered to condition X (max)--1300--352-
Quenched & Tempered to condition Y (max)1095-122510-36328
Quenched & Tempered to condition Y (max)--1375--352-
Quenched & Tempered to condition Z (max)1235-15507-44411
Quenched & Tempered to condition Z (max)-------

ISO 898-1 Grade 8.8

Chemical compositions and mechanical properties for ISO 898-1 Grade 8.8.

Chemical Compositions - ISO 898-1 Grade 8.8

Property classMaterial and heat treatmentChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aTempering temperature ⁰CMin.
CCPSBb
MinMax MaxMax Max
8.8Carbon steel with additives (e.g. Boron or Mn or Cr) quenched and tempered0,15e0,400,0250,0250,003425
8.8 Carbon steel quenched and tempered0,250,550,0250,0250,003425
8.8Alloy steel quenched and temperedg0,200,550,0250,0250,003425

Mechanical Properties - ISO 898-1 Grade 8.8

Mechanical or physical propertyMechanical or physical propertyTensile strength, Rm, MPaTensile strength, Rm, MPaStress at 0,2 % non-proportional elongation, Rp0,2, MPaStress at 0,2 % non-proportional elongation, Rp0,2, MPaStress under proof load, Spf, MPaProof strength ratioSp,nom/ReL,minPercentage elongation after fracture for machined test pieces, A, %Percentage reduction of area after fracture for machined test pieces, Z, %Height of non-decarburized thread zone, E, mmDepth of complete decarburization in the thread, G, mmReduction of hardness after retempering, HVImpact strength, KVij, J
nom.cmin.nom.cmin.nom. min.min.min.max.max. min.
8.8d≤ 16 mma8008006406405800,9112521/2 H10,0152027
8.8d≤ 16 mmb8008306406606000,9112521/2 H10,0162127

ISO 898-1 Grade 10.9

Chemical compositions and mechanical properties for ISO 898-1 Grade 10.9.

Chemical compositions - ISO 898-1 Grade 10.9

Property class Material and heat treatment Chemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aTempering temperature ⁰C
CCPSBb
minmaxmaxmaxmaxmin
10.9Carbon steel with additives (e.g. Boron or Mn or Cr) quenched and tempered0,20e0,550,0250,0250,003425
10.9Carbon steel quenched and tempered0,250,550,0250,0250,003425
10.9Alloy steel quenched and temperedg0,200,550'0250,0250,003425

Mechanical properties - ISO 898-1 Grade 10.9

Mechanical or physical propertyTensile strength, Rm, MPaTensile strength, Rm, MPaStress at 0,2 % non-proportional elongation, Rp0,2, MPaStress at 0,2 % non-proportional elongation, Rp0,2, MPaStress under proof load, Spf, MPaProof strength ratioPercentage elongation after fracture for machined test pieces, A, %Percentage reduction of area after fracture for machined test pieces, Z, %Height of non-decarburized thread zone, E, mmDepth of complete decarburization in the thread, G, mmReduction of hardness after retempering, HVImpact strength, KVij, J
Sp,nom/ReL,min
nom.cmin. nom.min.nom.minminminminmaxmaxmin
10.9100010409009408300,889482/3 H10,0172227

ISO 898-1 Grade 12.9

Chemical compositions and mechanical properties for ISO 898-1 Grade 12.9.

Chemical compositions - ISO 898-1 Grade 12.9

Property classMaterial and heat treatmentChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aTempering temperature ⁰C
CCPSBb
minmaxmaxmaxmaxmin
12.9f h iAlloy steel quenched and temperedg0,300,500,0250,0250,003425
12.9f h iCarbon steel with additives (e.g. Boron or Mn or Cr or Molybdenum) quenched and tempered0,280,500,0250,0250,003380

Mechanical properties - ISO 898-1 Grade 12.9

Mechanical or physical propertyTensile strength, Rm, MPaTensile strength, Rm, MPaStress at 0,2 % non-proportional elongation, Rp0,2, MPaStress at 0,2 % non-proportional elongation, Rp0,2, MPaStress under proof load, Spf, MPaProof strength ratioPercentage elongation after fracture for machined test pieces, A, %Percentage reduction of area after fracture for machined test pieces, Z, %Height of non-decarburized thread zone, E, mmDepth of complete decarburization in the thread, G, mmReduction of hardness after retempering, HV

Impact strength, KVij, J
Sp,nom/ReL,min
nomminnomminnomminminminminmaxmaxmin
12.912001220108011009700,888443/4 H10,01823k

ISO 898-2 Grade 8

Chemical compositions and mechanical properties for ISO 898-2 Grade 8.

Chemical compositions - ISO 898-2 Grade 8

Property classMaterial and heat treatmentChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)a
CCPSMn
minmaxmaxmaxmin
8CARBON STEEL QUENCHED AND TEMPERED-0.580.0480.0580.3

Mechanical properties - ISO 898-2 Grade 8

Mechanical or physical propertyVickers hardnessVickers hardness Brinell hardnessBrinell hardnessRockwell hardnessRockwell hardness
HVHVHBHBHRCHRC
minmax minmaxminmax
M5 ≤ D ≤ M16200302190287-30
M16 < D ≤ M39233353221336-36

ISO 898-2 Grade 10

Chemical compositions and mechanical properties for ISO 898-2 Grade 10.

Chemical compositions - ISO 898-2 Grade 10

Property classMaterial and heat treatmentChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)a
CCPSMn
minmaxmaxmaxmin
10CARBON STEEL QUENCHED AND TEMPERED-0.580.0480.0580.3

Mechanical properties - ISO 898-2 Grade 10

Mechanical or physical propertyVickers hardnessVickers hardnessBrinell hardnessBrinell hardnessRockwell hardnessRockwell hardness
HVHVHBHBHRCHRC
min maxminmaxminmax
M5 ≤ D ≤ M162723532593362636
M16 < D ≤ M392723532593362636

ISO 898-2 Grade 12

Chemical compositions and mechanical properties for ISO 898-2 Grade 12.

Chemical compositions - ISO 898-2 Grade 12

Property classMaterial and heat treatmentChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)aChemical composition limit (cast analysis, %)a
CCPSMn
minmaxmaxmaxmin
12CARBON STEEL QUENCHED AND TEMPERED-0.580.0480.0580.45

Mechanical properties - ISO 898-2 Grade 12

Mechanical or physical propertyVickers hardnessVickers hardnessBrinell hardnessBrinell hardnessRockwell hardnessRockwell hardness
HVHVHBHBHRCHRC
minmaxminmaxminmax
M5 ≤ D ≤ M162953532803362936
M16 < D ≤ M392723532593362636

C35E

Chemical compositions and mechanical properties for C35E.

Chemical compositions - C35E

VariantCastDiWeldabilityWeldabilityC%Si%Mn%P %S %Cr %Ni %
C35ECC0.98CEV 0.65maxMin0.350.150.5-0.015--
Pcm 0.49maxMax0.390.350.80.030.0350.30.3

Mechanical properties - C35E

VariantConditionFormatDimension [mm]Yield strength min [MPa]Tensile strength [MPa]Elongation A5 [%]HardnessImpact (ISO-V) strengthmin
Rp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** RelRp0.2 * Reh, ** Rel
C35E+ARRound bar< 20345*520-69010< 230 HB0 °C 0 J (long)
C35E+ARRound bar20 < 90345*520-69019165-220 HB0 °C 0 J (transv)

C45E

Chemical compositions and mechanical properties for C45E.

Chemical compositions - C45E

GRADENUMBERCSiMnPSCrMrNiCr+Mo+Ni
C45E1.11910.42-0.50≤ 0.400.50-0.80≤ 0.030≤ 0.035≤ 0.40≤ 0.10≤ 0.40≤ 0.63

Mechanical properties - C45E

Surface FinishTensile Strength MpaYield Strength MpaElongation, %Hardness,HB
Cold Drawn640–850500–650≥8190–270
Smooth Turned570–700300–45014 – 30170–210
Hot Rolled / Forged570–700300–45014 – 30170–210

25CRMO4

Chemical compositions and mechanical properties for 25CRMO4.

Chemical compositions - 25CRMO4

1.7218
25CrMo4CSIMnPSCrMo
min0,22-0,6--0,90,15
max0,290,40,90,0350,041,20,30

Mechanical properties - 25CRMO4

Diameter (mm)0.2 % proof stress (N/mm2)Tensile strength (N/mm2)Elongation (%)Reduction of area (%)Notch impact energy (ISO-V) (J)
up to 16700900-1100125050
17-40600800-950145555
41-100450700-850156055
101-160400650-800166055

42CRMO4

Chemical compositions and mechanical properties for 42CRMO4.

Chemical compositions - 42CRMO4

GRADENUMBERCSiMnPSCrMo
42CrMo41.72251.7225≤ 0.400.60-0.90≤ 0.025≤ 0.0350.90-1.200.15-0.3

Mechanical properties - 42CRMO4

Diameter d mm≤ 1616-4040-100100-160160-250
Thickness t mm< 801/08/202020-6060-100100-160
Yield Strength Mpa≥900≥750≥650≥550≥500
Tensile Strength Mpa1100-13001000-1200900-1100800-950750-900
Elongation, %≥10≥11≥12≥13≥14
Reduction of area ,%≥40≥45≥50≥50≥55
impact≥30≥35≥35≥35≥35

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