EN3A (070M20)

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

Chemical compositions - EN3A (070M20)

C	Si	Mn	S	P
0.16/0.24	0.10/0.40	0.50/0.90	0.050 MAX	0.050 MAX

Mechanical properties - EN3A (070M20)

TEN. STRENTH	YIELD STRESS	ELONG	BHN
430 N/MM2	300 N/MM2	21%	140

EN8 (080M20)

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

Chemical compositions - EN8 (080M20)

Standard	Grade	C	Mn	P	S	Si
BS 970BS 970	EN8/080M40	0.36-0.44	0.60-1.00	0.05	0.005	0.10-0.40

Mechanical properties - EN8 (080M20)

Heat Treatment	Tensile Strength Rm	Yield Strength	Rp 0.2	A min on	Impact	Impact	Hardness
		Rm		5.65√So	Izod Ft.lb	KCV J	HB
	MPa	MPa	MPa
N	550	280	-	16	15	16	152/207
N	510	245	-	17	-	-	146/197
Q	625/775	385	355	16	25	28	179/229
R	700/850	465	450	16	25	28	201/255

EN8D (080A42)

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

Chemical compositions - EN8D (080A42)

C	Si	MN	S	P
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)

	C	Si	Mn	S	P	Cr	Ni	Mo
Min	0.32	0.1	1.3					0.22
Max	0.4	0.4	1.7	0.04	0.035			0.3

Mechanical properties - EN16 (605M36)

	Yield	0.2% proof	UTS (Rm)	Elong (A)	Red of Area (Z)	Hardness	Impact Test (KV)
	N/mm2	N/mm2	N/mm2	%	%	HB	J
Quenched & Tempered to condition R (min)	495	-	700	15	-	201	28
Quenched & Tempered to condition R (max)	-	-	850	-	-	255	-
Quenched & Tempered to condition S (min)	585	-	775	15	-	223	50
Quenched & Tempered to condition S (max)	-	-	925	-	-	277	-
Quenched & Tempered to condition T (min)	680	-	850	13	-	248	50
Quenched & Tempered to condition T (max)	-	-	1000	-	-	302	-
Drawn, Quenched & Tempered to condition T (min)	700	-	850	9	-	248	50
Drawn, Quenched & Tempered to condition T (max)	-	-	1000	-	-	302	-

EN19 (708M40)

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

Chemical compositions - EN19 (708M40)

Grade	C	Si	Mn	P	S	Cr	Mo
EN19	0.35-0.45	0.10-0.35	0.50-0.80	≤ 0.050	≤ 0.050	0.90-1.50	0.20-0.40
708M40	0.36-0.44	0.10-0.40	0.70-1.00	≤ 0.035	≤ 0.040	0.90-1.20	0.15-0.25
709M40	0.36-0.44	0.10-0.40	0.70-1.00	≤ 0.035	≤ 0.040	0.90-1.20	0.25-0.35

EN24 (817M40)

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

Chemical compositions - EN24 (817M40)

C	Si	Mn	P	S	Cr	Mo	Ni
0.36/0.44	-	0.45/0.70	0.035	0.035	1.00/1.40	0.20/0.35	1.30/1.70

Mechanical properties - EN24 (817M40)

Yield strength - Size	Yield strength - Mpa
> 29 ≤ 100	755
Tensile strength - Size	Tensile strength - Mpa
> 29 ≤ 100	925/1075
% Elongation	Impact energy Joules	HBW hardness
12	42	269/331

EN26 (826M40)

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

Chemical Compositions - EN26 (826M40)

	C	Si	Mn	S	P	Cr	Ni	Mo
Min	0.36	0.1	0.45	-	-	0.5	2.3	0.45
Max	0.44	0.35	0.7	0.04	0.035	0.8	2.8	0.65

Mechanical properties - EN26 (826M40)

	Yield	0.2% proof	UTS (Rm)	Elong (A)	Red of Area (Z)	Hardness	Impact Test (KV)
	N/mm2	N/mm2	N/mm2	%	%	HB	J
Quenched & Tempered to condition U (min)	755	-	925	12	-	269	42
Quenched & Tempered to condition U (max)	-	-	1075	-	-	331	-
Quenched & Tempered to condition V (min)	850	-	1000	12	-	293	42
Quenched & Tempered to condition V (max)	-	-	1150	-	-	352	-
Quenched & Tempered to condition W (min)	940	-	1075	11	-	311	35
Quenched & Tempered to condition W (min)	-	-	1225	-	-	375	-
Quenched & Tempered to condition X (max)	1020	-	1150	10	-	363	28
Quenched & Tempered to condition X (max)	-	-	1300	-	-	352	-
Quenched & Tempered to condition Y (max)	1095	-	1225	10	-	363	28
Quenched & Tempered to condition Y (max)	-	-	1375	-	-	352	-
Quenched & Tempered to condition Z (max)	1235	-	1550	7	-	444	11
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 class	Material and heat treatment	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Tempering temperature ⁰CMin.
		C	C	P	S	Bb
		Min	Max	Max	Max	Max
8.8	Carbon steel with additives (e.g. Boron or Mn or Cr) quenched and tempered	0,15e	0,40	0,025	0,025	0,003	425
8.8	Carbon steel quenched and tempered	0,25	0,55	0,025	0,025	0,003	425
8.8	Alloy steel quenched and temperedg	0,20	0,55	0,025	0,025	0,003	425

Mechanical Properties - ISO 898-1 Grade 8.8

Mechanical or physical property	Mechanical or physical property	Tensile strength, Rm, MPa	Tensile strength, Rm, MPa	Stress at 0,2 % non-proportional elongation, Rp0,2, MPa	Stress at 0,2 % non-proportional elongation, Rp0,2, MPa	Stress under proof load, Spf, MPa	Proof strength ratioSp,nom/ReL,min	Percentage 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, mm	Depth of complete decarburization in the thread, G, mm	Reduction of hardness after retempering, HV	Impact strength, KVij, J
		nom.c	min.	nom.c	min.	nom.		min.	min.	min.	max.	max.	min.
8.8	d≤ 16 mma	800	800	640	640	580	0,91	12	52	1/2 H1	0,015	20	27
8.8	d≤ 16 mmb	800	830	640	660	600	0,91	12	52	1/2 H1	0,016	21	27

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, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Tempering temperature ⁰C
		C	C	P	S	Bb
		min	max	max	max	max	min
10.9	Carbon steel with additives (e.g. Boron or Mn or Cr) quenched and tempered	0,20e	0,55	0,025	0,025	0,003	425
10.9	Carbon steel quenched and tempered	0,25	0,55	0,025	0,025	0,003	425
10.9	Alloy steel quenched and temperedg	0,20	0,55	0'025	0,025	0,003	425

Mechanical properties - ISO 898-1 Grade 10.9

Mechanical or physical property	Tensile strength, Rm, MPa	Tensile strength, Rm, MPa	Stress at 0,2 % non-proportional elongation, Rp0,2, MPa	Stress at 0,2 % non-proportional elongation, Rp0,2, MPa	Stress under proof load, Spf, MPa	Proof strength ratio	Percentage 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, mm	Depth of complete decarburization in the thread, G, mm	Reduction of hardness after retempering, HV	Impact strength, KVij, J
						Sp,nom/ReL,min
	nom.c	min.	nom.	min.	nom.	min	min	min	min	max	max	min
10.9	1000	1040	900	940	830	0,88	9	48	2/3 H1	0,017	22	27

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 class	Material and heat treatment	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Tempering temperature ⁰C
		C	C	P	S	Bb
		min	max	max	max	max	min
12.9f h i	Alloy steel quenched and temperedg	0,30	0,50	0,025	0,025	0,003	425
12.9f h i	Carbon steel with additives (e.g. Boron or Mn or Cr or Molybdenum) quenched and tempered	0,28	0,50	0,025	0,025	0,003	380

Mechanical properties - ISO 898-1 Grade 12.9

Mechanical or physical property	Tensile strength, Rm, MPa	Tensile strength, Rm, MPa	Stress at 0,2 % non-proportional elongation, Rp0,2, MPa	Stress at 0,2 % non-proportional elongation, Rp0,2, MPa	Stress under proof load, Spf, MPa	Proof strength ratio	Percentage 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, mm	Depth of complete decarburization in the thread, G, mm	Reduction of hardness after retempering, HV	Impact strength, KVij, J
						Sp,nom/ReL,min
	nom	min	nom	min	nom	min	min	min	min	max	max	min
12.9	1200	1220	1080	1100	970	0,88	8	44	3/4 H1	0,018	23	k

ISO 898-2 Grade 8

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

Chemical compositions - ISO 898-2 Grade 8

Property class	Material and heat treatment	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a
		C	C	P	S	Mn
		min	max	max	max	min
8	CARBON STEEL QUENCHED AND TEMPERED	-	0.58	0.048	0.058	0.3

Mechanical properties - ISO 898-2 Grade 8

Mechanical or physical property	Vickers hardness	Vickers hardness	Brinell hardness	Brinell hardness	Rockwell hardness	Rockwell hardness
	HV	HV	HB	HB	HRC	HRC
	min	max	min	max	min	max
M5 ≤ D ≤ M16	200	302	190	287	-	30
M16 < D ≤ M39	233	353	221	336	-	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 class	Material and heat treatment	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a
		C	C	P	S	Mn
		min	max	max	max	min
10	CARBON STEEL QUENCHED AND TEMPERED	-	0.58	0.048	0.058	0.3

Mechanical properties - ISO 898-2 Grade 10

Mechanical or physical property	Vickers hardness	Vickers hardness	Brinell hardness	Brinell hardness	Rockwell hardness	Rockwell hardness
	HV	HV	HB	HB	HRC	HRC
	min	max	min	max	min	max
M5 ≤ D ≤ M16	272	353	259	336	26	36
M16 < D ≤ M39	272	353	259	336	26	36

ISO 898-2 Grade 12

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

Chemical compositions - ISO 898-2 Grade 12

Property class	Material and heat treatment	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a	Chemical composition limit (cast analysis, %)a
		C	C	P	S	Mn
		min	max	max	max	min
12	CARBON STEEL QUENCHED AND TEMPERED	-	0.58	0.048	0.058	0.45

Mechanical properties - ISO 898-2 Grade 12

Mechanical or physical property	Vickers hardness	Vickers hardness	Brinell hardness	Brinell hardness	Rockwell hardness	Rockwell hardness
	HV	HV	HB	HB	HRC	HRC
	min	max	min	max	min	max
M5 ≤ D ≤ M16	295	353	280	336	29	36
M16 < D ≤ M39	272	353	259	336	26	36

C35E

Chemical compositions and mechanical properties for C35E.

Chemical compositions - C35E

Variant	Cast	Di	Weldability	Weldability	C%	Si%	Mn%	P %	S %	Cr %	Ni %
C35E	CC	0.98	CEV 0.65max	Min	0.35	0.15	0.5	-	0.015	-	-
			Pcm 0.49max	Max	0.39	0.35	0.8	0.03	0.035	0.3	0.3

Mechanical properties - C35E

Variant	Condition	Format	Dimension [mm]	Yield strength min [MPa]	Tensile strength [MPa]	Elongation A5 [%]	Hardness	Impact (ISO-V) strengthmin
Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel	Rp0.2 * Reh, ** Rel
C35E	+AR	Round bar	< 20	345*	520-690	10	< 230 HB	0 °C 0 J (long)
C35E	+AR	Round bar	20 < 90	345*	520-690	19	165-220 HB	0 °C 0 J (transv)

C45E

Chemical compositions and mechanical properties for C45E.

Chemical compositions - C45E

GRADE	NUMBER	C	Si	Mn	P	S	Cr	Mr	Ni	Cr+Mo+Ni
C45E	1.1191	0.42-0.50	≤ 0.40	0.50-0.80	≤ 0.030	≤ 0.035	≤ 0.40	≤ 0.10	≤ 0.40	≤ 0.63

Mechanical properties - C45E

Surface Finish	Tensile Strength Mpa	Yield Strength Mpa	Elongation, %	Hardness,HB
Cold Drawn	640–850	500–650	≥8	190–270
Smooth Turned	570–700	300–450	14 – 30	170–210
Hot Rolled / Forged	570–700	300–450	14 – 30	170–210

25CRMO4

Chemical compositions and mechanical properties for 25CRMO4.

Chemical compositions - 25CRMO4

1.7218
25CrMo4	C	SI	Mn	P	S	Cr	Mo
min	0,22	-	0,6	-	-	0,9	0,15
max	0,29	0,4	0,9	0,035	0,04	1,2	0,30

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 16	700	900-1100	12	50	50
17-40	600	800-950	14	55	55
41-100	450	700-850	15	60	55
101-160	400	650-800	16	60	55

42CRMO4

Chemical compositions and mechanical properties for 42CRMO4.

Chemical compositions - 42CRMO4

GRADE	NUMBER	C	Si	Mn	P	S	Cr	Mo
42CrMo4	1.7225	1.7225	≤ 0.40	0.60-0.90	≤ 0.025	≤ 0.035	0.90-1.20	0.15-0.3

Mechanical properties - 42CRMO4


Diameter d mm	≤ 16	16-40	40-100	100-160	160-250
Thickness t mm	< 8	01/08/2020	20-60	60-100	100-160
Yield Strength Mpa	≥900	≥750	≥650	≥550	≥500
Tensile Strength Mpa	1100-1300	1000-1200	900-1100	800-950	750-900
Elongation, %	≥10	≥11	≥12	≥13	≥14
Reduction of area ,%	≥40	≥45	≥50	≥50	≥55
impact	≥30	≥35	≥35	≥35	≥35

Material Grades

Carbon Steel Material Grades

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