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Engineering Projects Cast Alloy Steel Require Low Maintenance Robust Design

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Wuxi Jinlai Mechanical Processing Co., Ltd.

Engineering Projects Cast Alloy Steel Require Low Maintenance Robust Design

Country/Region	china
City & Province	wuxi jiangsu

Product Details

34CrNiMo6 is a quenching and tempering steel with high strength, high toughness and good hardenability. Used for large axles, machine components, tools and high strength fasteners. The steel can be induction hardened and it is weldable under certain conditions. Through hardenability to appr. 100 mm diameter bar with oil quenching.

Similar designations

34CrNiMo6M, 356, 356D, SS2541, MoCN315, MoCN315M, 1.6582, 35NCD6, 816M40, 817M40, 35NiCrMo6, SNCM447, 30Ch2N2MA, F.1272, 40NiCrMo7, 4337, 4340, 92541, VSQT34CrNiMo6, VSQT34CrNiMo6/700, VSQT34CrNiMo6/800, VSQT34CrNiMo6/900, Stål 2541, Steel 2541, EN24

Chemical composition

Variant	Cast	Di		C %	Si %	Mn %	P %	S %	Cr %	Ni %	Mo %	V %	Al %
356D	IC		Min	0.32	0.20	0.70	-	0.020	1.35	1.30	0.20	-	-
356D	IC		Max	0.38	0.35	0.80	0.025	0.030	1.60	1.60	0.30	0.100	-
356Q	IC		Min	0.32	0.15	0.65	-	-	1.30	1.30	0.20	-	-
356Q	IC		Max	0.38	0.35	0.80	0.025	0.002	1.60	1.60	0.30	0.100	-
6499	CC	8.81	Min	0.30	0.15	0.50	-	-	1.40	1.40	0.15	-	-
6499	CC	8.81	Max	0.38	0.40	0.80	0.015	0.015	1.70	1.70	0.30	-	-
6502, MoCN 315 M	CC		Min	0.30	-	0.50	-	0.015	1.30	1.30	0.15	-	-
6502, MoCN 315 M	CC		Max	0.38	0.40	0.80	0.025	0.035	1.70	1.70	0.30	-	-
SS 2541 (6498)	CC	7.91	Min	0.32	0.10	0.50	-	0.020	1.30	1.30	0.15	-	-
SS 2541 (6498)	CC	7.91	Max	0.39	0.40	0.80	0.035	0.035	1.70	1.70	0.30	-	-
SB9205	CC		Min	0.36	0.15	0.50	0.000	0.000	1.30	1.30	0.20	-	0.015
SB9205	CC		Max	0.38	0.40	0.70	0.025	0.012	1.40	1.70	0.30	-	0.040
34CrNiMo6 EN10083-3:2006 (ref)	Std		Min	0.30	-	0.50	-	-	1.30	1.30	0.15	-	-
34CrNiMo6 EN10083-3:2006 (ref)	Std		Max	0.38	0.40	0.80	0.025	0.035	1.70	1.70	0.30	-	-
SS142541 (1986)* (ref)	Std		Min	0.32	0.10	0.50	-	-	1.30	1.30	0.15	-	-
SS142541 (1986)* (ref)	Std		Max	0.39	0.40	0.80	0.035	0.035	1.70	1.70	0.30	-	-

Mechanical Properties

Variant	Condition	Format	Dimension [mm]	Yield strength min [MPa]	Tensile strength [MPa]	Elongation A₅ [%]	Reduction of area Z_min [%]	Hardness	Impact (ISO-V) strength_min
Rp_0.2 * R_eh, ** R_el
356D	+SA	Round bar	< 190	-	-	-	-	200 HB typical	-
	+QT	Round bar	< 50	900	1000 typical	10	45	360 HB typical	20 °C 140 J (long)
		Round bar	50 < 100	800	900 typical	10	45	330 HB typical	20 °C 115 J (long)
		Round bar	100 < 200	700	800 typical	10	45	300 HB typical	-
		Round bar	> 200	600	700 typical	10	45	270 HB typical	-
		Round bar	< 150	-	-	-	-	285 HB typical	20 °C 90 J (long)
	+Q	Round bar	< 100	1200	1500 typical	7	25	50 HRC typical	-
356Q	+SA	Round bar	< 190	-	-	-	-	200 HB typical	-
	+QT	Round bar	< 50	900	1000 typical	10	45	360 HB typical	20 °C 140 J (long)
		Round bar	50 < 100	800	900 typical	10	45	330 HB typical	20 °C 115 J (long)
		Round bar	100 < 200	700	800 typical	10	45	300 HB typical	-
		Round bar	> 200	600	700 typical	10	45	270 HB typical	-
		Round bar	< 150	-	-	-	-	285 HB typical	20 °C 90 J (long)
	+Q	Round bar	< 100	1200	1500 typical	7	25	50 HRC typical	-
6499	+AR	Round bar	25 < 160	-	-	-	-	< 380 HB	-
	+A	Round bar	25 < 160	-	-	-	-	< 248 HB	-
	+QT	Round bar	25 < 40	900*	1100-1300	10	45	320-380 HB	20 °C 45 J (long)
		Round bar	40 < 100	800*	1000-1200	11	50	300-350 HB	20 °C 45 J (long)
		Round bar	100 < 160	700*	900-1100	12	55	270-320 HB	20 °C 45 J (long)
6502, MoCN 315 M	+AR	Round bar	25 < 160	-	-	-	-	< 380 HB	-
	+A	Round bar	25 < 160	-	-	-	-	< 248 HB	-
	+QT	Round bar	25 < 40	900*	1100-1300	10	45	320-380 HB	20 °C 45 J (long)
		Round bar	40 < 100	800*	1000-1200	11	50	300-350 HB	20 °C 45 J (long)
		Round bar	100 < 160	700*	900-1100	12	55	270-320 HB	20 °C 45 J (long)
SS 2541 (6498)	+AR	Round bar	25 < 160	-	-	-	-	< 380 HB	-
	+A	Round bar	25 < 160	-	-	-	-	< 248 HB	-
	+QT	Round bar	25 < 40	900*	1100-1300	10	45	320-380 HB	20 °C 45 J (long)
		Round bar	40 < 100	800*	1000-1200	11	50	300-350 HB	20 °C 45 J (long)
		Round bar	25 < 160	700*	900-1050	12	55	270-325 HB	-20 °C 27 J (long)
34CrNiMo6 EN10083-3:2006 (ref)	+AR	All formats	20 < 180	-	-	-	-	< 370 HB	-
	+A	All formats	20 < 180	-	-	-	-	< 248 HB	-
	+QT	Round bar	16.1 < 40	900*	1100-1300	10	45	-	20 °C 45 J (long)
		Round bar	40.1 < 100	800*	1000-1200	11	50	-	20 °C 45 J (long)
		Round bar	100.1 < 160	700*	900-1100	12	55	-	20 °C 45 J (long)
		Round bar	160.1 < 180	600*	800-950	13	55	-	20 °C 45 J (long)
SS142541 (1986)* (ref)	+QT	All formats	< 180	700	900-1100	12	45	270-325 HB	-
		All formats	< 100	800	1000-1200	11	45	300-355 HB	-
		All formats	< 40	900	1100-1300	10	45	325-380 HB	-
	+A	All formats	-	-	-	-	-	< 241 HB	-

*SS 142541(1986) All formats condition +QT: Dim <180mm corresponds to SS2541-03; Dim<100mm corresponds to SS2541-05; Dim<40mm corresponds to SS2541-04; All formats condition +A corresponds to SS2541-02

Transformation temperatures

	Temperature °C
MS	315
AC1	725
AC3	785

Heat treatment recommendations

Treatment	Condition	Temperature cycle	Cooling/quenching
Hot forging	+AR	1050...880^oC	In air
Soft annealing	+A	650...700^oC	Slowly (15^oC/h) until 600^oC
Stress relieve annealing	+SRA	450...650^oC (appr. 50^oC under tempering temperature)	In air
Hardening	+Q	820...850^oC	Quenching in oil
Tempering	+T	540...680^oC	In air

EN 34CrNiMo6 Steel is an important alloy engineering steel grade as per BS EN 10083-3:2006. 34CrNim06 steel has high strength, high toughness and good hardenability. EN / DIN 34CrNiMo6 alloy steel has the stability of resistance to overheating, but the white sensitivity of 34CrNiM06 is high. It also has the temper brittleness, so the weldability of 34CrNiMo6 material is poor. The steel 34CrNiMo6 needs the high temperature preheating before welding in order to eliminate the stress after welding processing.

1. EN Steel 34CrNiMo6 Supply Range

Round Steel Bar Sizes: diameter 10mm – 3000mm
Steel Flat and Plate: 10mm-1500mm thickness x 200-3000mm width
Other steel shape and sizes available according to your requirements.

Surface finish: Black, machined, peeled, turned or according to other customers’ pecial requirements.

2. EN 34CrNiMo6 Steel Standards And Equivalents

BS EN 10083 -3: 2006	34CrNiMo6 / 1.6582	ASTM A29: 2004	4337
BS EN 10250 – 3: 2000

3. EN/DIN 34CrNiMo6 Steel Chemical Composition Properties

BS EN 10083 – 3:2006	34CrNiMo6 /1.6582	C	Mn	Si	P	S	Cr	Mo	Ni
BS EN 10083 – 3:2006		0.30-0.38	0.5-0.8	0.40 max	0.025 max	0.035 max	1.3-1.7	0.15-0.30	1.3-1.7
BS EN 10250-3:2000		C	Mn	Si	P	S	Cr	Mo	Ni
BS EN 10250-3:2000		0.30-0.38	0.5-0.8	0.40 max	0.035 max	0.035 max	1.3-1.7	0.15-0.30	1.3-1.7
ASTM A29: 2004	4337	C	Mn	Si	P	S	Cr	Mo	Ni
ASTM A29: 2004	4337	0.30-0.40	0.6-0.8	0.20-0.35	0.035 max	0.040 max	0.70-0.90	0.20-0.30	1.65-2.00

4. Mechanical Properties of EN/DIN 34CrNiM06 / 1.6582 Alloy Steel

Properties	< 16	>16 – 40	>40 – 100	>100 – 160	>160 – 250
Thickness t [mm]	< 8	8<t<20	20<t<60	60<t<100	100<t<160
Yield strength Re [N/mm²]	min. 1000	min. 900	min. 800	min. 700	min. 600
Tensile strength Rm [N/mm2]	1200 – 1400	1100 – 1300	1000 – 1200	900 – 1100	800 – 950
Elongation A [%]	min. 9	min. 10	min. 11	min. 12	min. 13
Reduction of area Z [%]	min. 40	min. 45	min. 50	min. 55	min. 55
Toughness CVN [J]	min. 35	min. 45	min. 45	min. 45	min. 45

5. Heat Treatment of 34CrNiMo6 Engineering Steel

Quenched and Tempered (Q+T) of 34CrNiMo6 Steel

Heat 34CrNiMo6 round steel slowly to the temperature of 850°C;
Soak at this hardening temperature quench in oil;
Temper as soon as 34CrNiMo6 steels reach room temperature.
Heat uniformly to the suitable temperature;
Withdraw from the furnace and cool in the air.
The usual tempering temperature is 600°C which depending on the actual requirements.

6. Forging of DIN 34CrNiMo6 / 1.6582 Steel

Hot forming temperature: 1100-900oC.

7. Machinability of Steel 34CrNiMo6

Machining is best done with this 1.6582 alloy steel in the annealed or normalized and tempered condition. It can be machined by all conventional methods.

8. Welding

The alloy materials can be fusion or resistance welded. Preheat and post heat weld procedures should be followed when welding this alloy by established methods.

9. Application

EN DIN 34CrNiMo6 steel is used to make tools which demands good plasticity and high strength. It is usually selected to make the big size and important parts, such as heavy machinery axle,turbine shaft blade, high load of transmission parts, fasteners, crank shafts, gears, as well as heavily loaded parts for motor construction etc.