4142 Alloy Steel Round Bar

4142 Steel is a high-quality medium-carbon alloy structural steel that has been quenched and tempered.4142 Alloy Steel is a grade of steel that should be annealed to coarse pearlite to coarse spheroidite structure for maximum machinability. Prior to air cooling, the steel should be austenitized at 1550oF and cooled to 1390oF at 25oF or 14oF per hour, or alternately cooled to 1250oF and held for 5 hours for an iso-anneal. Simultaneously, this can be normalized at 1600°F (870°C) and then cooled by air.

♣ CHEMICAL COMPOSITION

Steel Grade	C	Si	Mn	Cr	Mo	Ni	V	W	P	S	Cu
4142	0.40-0.45	0.15-0.30	0.75-1.10	0.80-1.10	0.15-0.25	–	–	–	≤0.035	≤0.04	≤0.30

♣ DETAIL INFORMATION

Product Name	4142 Alloy Steel Round Bar
Steel Grade	4142
Standard	ASTM/DIN/JIS
Technique	Hot Rolled/Forged
Size	Hot Rolled φ 20-330 mm Hot Forged φ110-1200 mm (φ110-250 mm Hot rolled /forged )