20MnCr5 Forged/Forging Steel Round Bars (1.7147, AISI 5120)

• Type: Alloy Steel Bar
• Standard: AISI
• Technique: Forged
• Application: Die Steel Bar
• Surface Treatment: Polished
• Alloy: Alloy
• Model NO.: 20MnCr5 forged bars
• Special Use: Mold Steel
• Steel Grade: 400 Series
• Material of Forged Bars: 20mncr5
• Transport Package: Wooden or Steel Frame Crate Packing
• Specification: CE
• Trademark: LY
• Origin: Jiangyin
• HS Code: 722840000
• Production Capacity: 5000 Tons/Year

Product Description

We are professional 20MnCr5 Forged/Forging Steel Round bars(1.7147,AISI 5120) factory from china

Alloyed case hardening steel for parts with a required core tensile strength of 1000 - 1300 N/mm² and good wearing resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling parts.
 
Chemical Composition(%)

C	Mn	Si	P	S	Cr
0.17-0.22	1.10-1.40	0.40 max	0.035 max	0.035 max	1.00-1.30

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Mechanical Properties( T=20°C if not differently stated )

Heat treatment state	Diameter(mm)	Rm (Mpa)
QUENCHED AND TEMPERED	16 max	1200 min
QUENCHED AND TEMPERED	16-40	1000 min
QUENCHED AND TEMPERED	40-100	800 min

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HEAT TREATMENT AND HOT PLASTIC DEFORMATION TEMPERATURES

-	TEMPERATURE ° C	Cooling Medium
Forging or hot rolling	850-1100	air
Normalizing	840-870	air
Soft Annealing	650-700	furnace 217HB max
Carburising	880-980	/
Core hardening	860-900	oil
Intermediate annealing	650-700	/
Case hardening	780-820	oil
Tempering	150-200	/