En19 Scm440 AISI 4140 Hot Rolled Qt Alloy Steel Round Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Alloy: Alloy
• Special Use: Alloy Steel Bars
• Model NO.: EN19 SCM440 AISI 4140
• Length: 5.8-6m or as Required
• MOQ: 2tons
• Grade: En10 42CrMoA AISI 4140 Scm440
• Products: Hot Rolled Steel Bar
• Futhur Processing: Cold Drawn, Qt
• Transport Package: Standard Sea Worthy
• Specification: Anti-rust packing
• Trademark: Laiwu Xincheng
• Origin: China
• HS Code: 722
• Production Capacity: 3000tons/Month

Product Description

EN19 SCM440 AISI 4140 Hot Rolled QT Alloy Steel Round Bars

1) High fatigue strength and impact resistance after tempering
2) Good low-temperature impact toughness
3) No obvious temper brittleness

 

 AISI 4140 Chrome-Molybdenum High Tensile Steel

AISI 4140 equivalent material
♦JAPAN♦ : JIS SCM440 alloy steel 
♦GERMANY♦ : DIN WN-r 1.7255 / 42CrMo4 steel alloy
♦CHINA♦ :  GB 42CrMo steel
♦BRITISH♦ : BS 708M40

AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. 
 

 

Supply Size range
Hot Rolled 4140 steel bar: Ø16mm-310mm
Forging 4140 steel bar: Ø250mm-1000mm
Cold drawn 4140 steel bar:Ø12-100mm
Q&T 4140 steel bar:Ø16-310mm
Hot rolled 4140 steel plate: Thickness 10mm-200mm x width 100-2300mm
Forged 4140 material steel plate: Thickness 150-1500mm x Width 100 x 3000mm
Others 4140 material have not specified size, pls contact our experienced sales team.

1.Chemical composition of Alloy steel round bars

Standard	Grade	C	Si	Mn	P	S	Cr	Mo
ASTM A29	4140	0.38-0.43	0.15-0.35	0.75-1.00	≤ 0.035	≤ 0.04	0.8-1.1	0.15-0.25
	42CrMo4	0.38-0.45	≤ 0.4	0.6-0.90	≤ 0.025	≤ 0.035	0.9-1.2	0.15-0.30
EN10083	1.7225
JIS G4105	SCM440	0.38-0.43	0.15-0.35	0.6-0.85	≤ 0.035	≤ 0.04	0.9-1.2	0.15-0.30
GB 3077	42CrMo	0.38-0.45	0.17-0.37	0.5-0.80	≤ 0.035	≤ 0.035	0.9-1.2	0.15-0.25
BS 970	EN19	0.35-0.45	0.15-0.35	0.5-0.80	≤ 0.035	≤ 0.035	0.9-1.5	0.2-0.40

 

2.Properties of 4140 alloy steel bar

Tensile str. (N/mm2)	Yield point (N/mm2)	Elongation (%)	Contraction (%)	Impack work (J/cm2)
1080	930	12	45	63

3.Quality conditions:
1.Processing Line:
Iron - hot metal pretreatment - Converter - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
2.Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
3.Grain Sizes:5-8
4. non-metallic inclusions contorlling level

	A	B	C	D
	MAX	MAX	MAX	MAX
Thin	2	2	2	2
Thick	1	1	1	1

We specialsied in kinds of steel products more than 15 years,
especially in hot rolled , cold drawn steel round bars ,square bars,flat bars ,cold drawn bars and forged bars. 
Our main material are all carbon steel and alloy steel ,such as :aisi1020 1035 1045 1055 s20c s35c s45c s55c ss400 a36 c20 c35 c45 ck45 aisi4140/scm440 aisi4340/40crnimoa aisi8620H,40cr,gcr15,sae52100,20Mn,40Mn,St52,St37,S235JR,etc.
If you have need,please contact me freely.

scm44a0 grade lloy steel scm440 steel scm440 steel bar 4140 quenched and tempered steel properties 4140 steel equivalent grade 4140 steel equivalent 4140 steel round bar 4140 steel round stock chemical composition of aisi 4140 steel 42crmo alloy steel 42crmo4 alloy steel bar 42crmo4 forged steel 42crmo4 seamless steel pipes 42crmo4 steel rod heat treatment of 42crmo4 steel 1045 carbon steel hex bar 17-4 ph stainless steel hex bar 303 stainless steel hex bar 304 stainless steel hex bar 4130 alloy steel hex bar bright mild steel hex bar a36 steel round bar alloy steel round bar alloy steel round bar hs code alloy steel round bar manufacturer astm a36 steel round bar b16 steel round bar bending mild steel round bar black steel round bar bright mild steel round bar bright mild steel round bar sizes bright mild steel round bar tolerances bright steel round bar carbon steel round bar astm carbon steel round bar carbon steel round bar grades carbon steel round bar hs code drawn steel round bar en19 steel round bar en24 steel round bar en8 steel round bar forged steel round bar grade 8.8 steel round bar en8 bright steel bar aisi 4140 alloy steel alloy steel 4140 alloy steel grade 10.9 alloy steel grade 4140 alloy steel grades and properties alloy steel heat treatment chart alloy steel hex bar alloy steel quenched and tempered properties alloy steel quenched and tempered b7 alloy steel threaded rod b7 alloy steel jis scm440 steel scm440 alloy steel