16CrMo44 | DIN 1.7337

16CrMo44|DIN 1.7337 steel Manufacturer and Exporter,supplied with round,square,flat,block,and shaft etc.16CrMo44 is a low carbon steel containing chromium and molybdenum as strengthening elements which is similiar like Chinese grade 15CrMo.As pearlitic structure heat resistant steel,it has high hot strength and oxidation resistance when in high temperature,and it also has good welding property.16CrMo44 is generally used in the quenched and tempered condition.

16CrMo44 Equivalent Grade Chemical Composition

National Standard	Grade	C%	Si%	Mn%	Cr%	Mo%	P%	S%
DIN	16CrMo44 (1.7337)	0.13-0.2	0.15-0.35	0.5-0.8	0.9-1.2	0.4-0.5	≤0.025	≤0.035
GB	15CrMo	0.12-0.18	0.17-0.37	0.4-0.7	0.8-1.1	0.4-0.55	≤0.035	≤0.035

16CrMo44 Supply Form & Size & Tolerance

Supply Form	Size(mm)	Process	Tolerance
Round	Φ6-Φ100	Cold Drawn	Bright/Black	Best H11
	Φ16-Φ350	Hot Rolled	Black	-0/+1mm
			Peeled/ground	Best H11
	Φ90-Φ1000	Hot Forged	Black	-0/+5mm
			Rough Turned	-0/+3mm
Flat/Square/Block	Thickness :120-800	Hot Forged	Black	-0/+8mm
	Width:120-1500		Rough Machined	-0/+3mm

Remark:Tolerance can be customized as per requests

16CrMo44 Chemical Composition

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
DIN	16CrMo44	0.13-0.2	0.5-0.8	≤ 0.025	≤ 0.035	0.15-0.35	0.9-1.2	0.4-0.5
	1.7337
GB/T 3077	15CrMo	0.12-0.18	0.4-0.7	≤ 0.035	≤ 0.035	0.17-0.37	0.8-1.1	0.4-0.55

16CrMo44 Physical Property

Density, g/cm3	7.85
Modulus of elasticity Gpa	210

16CrMo44 Mechanical Property

Tensile Strength Mpa	Yield Strength Mpa	Elongation %	Reduction of Area %	Impact Charpy-V, J	Hardness HB
740	635	22.5	65	80	220-260

 

16CrMo44 Application

DIN1.7337 |16CrMo44 is widely used in petroleum ,petrifaction , high pressure boiler. Specialized purpose of seamless tube.Component parts for steam boilers and turbines, shafts for higher temperature ranges.

16CrMo44 Heat Treatment

Normalizing

1.Nominal normalizing temperature:840-890°C
2.Hold the temperature for several hours
3.Cooling in the air

Annealing

1.Nominal Annealing temperature:680-720°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 217

Hardening and Tempering(QT)

1.Nominal Hardening temperature:850-870°C
2.Hold at this temperature then quench in oil or water
3.Tempering  as soon as possible when the temperature low to ambient
4.Heat uniformly to the suitable temperature of 550-640°C
5.keep the material out of the furnace ,then cool in the air

Delivery Condition

1.Shape:Round/Square / Flat/Shafts/Rollers/Blocks
2.Surface condition:Black surface/Bright surface
3.Heat Treatment:Normalized/Annealed/QT
4.Straightness:Max 3mm/m(Enhanced straightness may be available on request)
5.Length:3000-5800mm suitable for 20″container.  above 6000mm,suitable for 40″ container
6.Grain Size: 5-8 acc to ASTM E112-96
7.Ultrasonic Standard: Sep1921/ASTM A388/EN 10228-3
8.Non Metallic Inclusion: 2 max acc to ASTM E45 /K4≤20 acc to DIN 50602
9.Forging Ratio: minimum 4 : 1
10.Marking: Grade/Weight/Length/Size/Heat Number

Quality Certification

A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.NDE test method/criteria

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