AISI 4140 1020 1045 Cold Drawn Structure Mild Carbon/Alloy Forged Bright Round Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Forged
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Alloy: Alloy
• Delivery Condition: Forged / Forged+Rough Turned
• Model NO.: AISI 1045 Medium Carbon Steel
• Heat Treatment: Annealed, Normalized, Qt
• MOQ: One Piece
• Grades: SAE 4140 En19 42CrMo4
• Transport Package: Standard Sea Worthy
• Specification: 200-1000mm
• Origin: China
• Production Capacity: 3000tons/Month

Product Description

AISI 4140 1020 1045 Cold Drawn structure mild carbon/alloy forged bright Round Bar-China LaiWu XinCheng

1.18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 forged steel bar sizes we can offer;
Round bar: 200-1000mm
Square bar:150×150-600×600mm

2.Supply condition for 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7  Forged steel bars:
Black /Rough Machined /Rough turned

3.Futhur heat treatment for 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7  forged steel :
Normalized
Annealed
Q&T(Quenched&Tempered)

4.18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7  Forged Steel round bar tolerance:
Black surface
Forged sizes up to 500mm (-0/+5mm)
Forged sizes above 500mm in diameter (-0/+8mm)
Machined surface to all sizes (-0/+3mm)

5.18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7  Equivalent 
 

EU	Germany	France	England	Italy	China	Finland	Inter
EN	DIN,WNr	AFNOR	BS	UNI	GB	SFS	ISO
18CrNiMo7-6	17CrNiMo6	18NCD6	820A16	18NiCrMo7	17Cr2Ni2Mo	511	18CrNiMo7
	17CrNiMo7

6.Chemical composition of  18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 

C	Si	Mn	Ni	P	S	Cr	Mo
0.15 - 0.21	max   0.4	0.5 - 0.9	1.4 - 1.7	max   0.025	max   0.035	1.5 - 1.8	0.25 - 0.35

7.HEAT TREATMENT OF 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7  FORGED STEEL

• Soft Annealing: Heat 17CrNiMo6 to 650-700oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.

• Normalizing: 850-880oC, air.
• Hardening: Carburising: 880-980oC. Core Hardening: 830-870oC, water. Case Hardening: 780-820oC, water.
• Tempering:Temperature: 150-200oC

8.Quality control:
1. Melting Process: EAF/BOF+LF+VD resulting in ingots
2. Both ends cut by saw
3. Ratio of forging:minimum 3:1
4. Grain size of final product: according to ASTM E112 more than 5,preferred more than 8
5. Ultrasonic test: As per SEP1921 Class C/c or D/d

9.MOQ: one piece per size/grade

10.Payment term: FOB CIF CFR EXW and so on

11.Delivery time : 7 to 30 days after deposit received.

12.Mark on both ends
Heat number, size, Length,grades, Weight,Origin (as per contract), or other as required

18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 Forged rough turned round bars / 18CrNiMo7-6 (1.6587)  forged rings / 18CrNiMo7-6 (1.6587) forged square steel bar / 18CrNiMo7 Forged rough turned round bars/ 17CrNiMo6  forged rough machined steel round square bar