SK4 alloy structural steel bar

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11-May-2024

Henan KUNFENG Co.,Ltd offer SK4 alloy structural steel forged steel round bar and SK4 hot rolled round bar with good quality and fast delivery at best price. And we are always keep complete specifications SK4 round bar stock for our customers choose. Welcome to visit our factory!

SK4 alloy structural steel

details :

Standard: DIN 7527-6,EN 10204, EN 10228-3,EN 10250,N10083,SEW 550
Delivery Condition: Hot forged +Normalized+ Rough turned
Q/T:Quench+ Temper Annealing
Steelmaking Process: electric furnace + LF refining furnace + argon protection casting + VD vacuum degassing furnace ingot (bottom gating)
Diameter: 5mm-1200mm ,the forged round bar is from 80mm-1200mm:
Length: 1000-12000mm
Inspecting: SEP1921 CLASS C/C，D/D，E/E
Min qty: 1pcs
Tolerance for forged round bar: OD: 0/+3.0mm Length: 0/+20.0mm Straightness: 3mm/1000mm

SK4 round bar Chemical analysis -% by mass*

Grade	C	Si	Mn	P	S	Cr	Ni	Cu
Grade	max	max	max	max.	max.	max	max	max
SK4	0.85-0.94	0.35	0.40	0.035	0.030	0.20	0.25	0.30

SK4 round bar Merchanical Propertites

Grade	Hardness	impression diameter	quenching	heat treatment
SK4	≤192HB	≥4.3	≥62HRC	770-790℃

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Tags: SCM445,SCM432, SCM420