Scm440 42CrMo4 SAE AISI 4140 En19 1.7225 High Tensile Hot Rolled Steel Round Bar Steel Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar
• Surface Treatment: Black Surface/Turned/Rough Machined/Peeled
• Alloy: Alloy
• Model NO.: 4140
• Special Use: Mold Steel, Free Cutting Steel, Engineering Steel
• Quality Inspection: Ut, Chemical Composition, Physical Properties/SGS
• Non-Metallic Inclusiton: ASTM E45
• Grain Size: ASTM E112
• Length: 3-5.8m, or as Per Request
• Heat Treatment: Annealed/Normalized/Q+T
• Transport Package: Nude Packing
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

Scm440 42CrMo4 SAE AISI 4140 En19 1.7225 High Tensile Hot Rolled Steel Round Bar Steel Bar

Equivalence

AISI/SAE			DIN/W.Nr			JIS			GB
4140			42CrMo4			SCM440			42CrMo
			42CrMoS4
			1.7225

Chemical Composition (%)

Steel Grade		C		Si		Mn		P		S		Cr		Mo
42CrMo4 1.7225		0.38		≤		0.60		≤		≤		0.90		0.15
		0.45		0.40		0.90		0.035		0.035		1.20		0.30
42CrMoS4		0.38		≤		0.60		≤		0.020		0.90		0.15
		0.45		0.40		0.90		0.035		0.040		1.20		0.30
4140		0.38		0.15		0.75		≤		≤		0.80		0.15
		0.43		0.35		1.00		0.035		0.040		1.10		0.25
SCM440		0.38		0.15		0.60		≤		≤		0.90		0.15
		0.43		0.35		0.85		0.035		0.040		1.20		0.30
42CrMo		0.38		0.17		0.50		≤		≤		0.90		0.15
		0.45		0.37		0.80		0.035		0.035		1.20		0.25

Dimensions

			Hot Rolled			Forged			Cold Drawn
Diameter(mm)			10-260			150-1500			2.5-70
Length(mm)			4000-10000			3000-10000			4000-10000

Forging Technique

Heat Temperature			Start Forging Temperature			Finish Forging Temperature			Cooling Method
1150-1200ºC			1130-1180ºC			≥850ºC			Slow Cooling for Φ>50mm

 

Delivery Condition
EAF+LF+VD, Hot Rolled, Forged and Cold Drawn, Black surface or Machined (Peeled, Turned, Grinded),
Untreated or Annealed or Q+T, UT 100% Passed

Characteristics
1. Ultrahigh strength steel with high intensity and toughness.
2. Good harden ability, High fatigue limit and capability of impact resistance after Q+T.
3. No obvious temper brittleness.


Applications
1. For making crucial mechanical parts with high intensity and large sections, such as shaft, gear and connecting rod.
2. For making large and medium size of plastic mold.

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