Hot Rolled Structural Q+T Alloy Tool Steel SAE4140 1.7225 SCM440 42CrMo

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Polished
• Alloy: Alloy
• Model NO.: SAE4140/1.7225/SCM440/42CrMo
• Special Use: Mold Steel
• Test: SGS/Ut100%/Elements Testing
• Heat Treatment: Annealing/Q+T
• Technology: Hot Rolled/Forged/Cold Drawn
• MOQ: 1MT
• Lead time: 7-15 days
• Stock: Available
• Sample: Free
• Grade: SAE4140/1.7225/SCM440/42CrMo
• Production route: EF/EAF+LF+VD/ESR
• Ut standard: Sep 1921-84 class 3 C/C to D/D
• Payment: 30% T/T deposit or L/C at sight
• Customized: Acceptable
• Surface: Black surface or turned
• Transport Package: Standard Export Packing or as Customers′ Request
• Specification: dia14-45094000-6000mm
• Trademark: CF STEEL
• Origin: China
• HS Code: 7228300000
• Production Capacity: 1000t/Month

Product Description

Hot Rolled Structural Q+T Alloy Tool Steel Round Bar SAE4140 1.7225 SCM440 42CrMo

Perform Standard: GB/T 3077-1999
 

C	Si	Mn	Cr	Mo	P	S	Ni
0.38~0.45	0.17~0.37	0.60~0.90	0.90~1.20	0.15-0.25	≤0.018	≤0.030	≤0.012

1, Application
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip,oil drill pipe joints and fishing tools,etc.

2, Feature
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;
 
3,Mechanical Properties:
Tensile strength:σb (MPa):≥1080(110) 
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)

4,Ready Stock: 
Round Bar diameter 14-460mm.All the sizes as require can be customerized as fresh production with MOQ.
 
5,Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.