Name: AISI 4340 16511 Alloy Steel Round Bar 36CrNiMo4 SNCM439
Brand: Gnee
Price: 0.60 USD

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AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439

Categories	Alloy Steel Round Bar
Brand Name:	Gnee
Model Number:	AISI 4340 1.6511 36CrNiMo4 SNCM439
Certification:	SGS
Place of Origin:	Tianjin
MOQ:	1000 Kilogram
Price:	$0.60 / Kilogram
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	1000 Ton/Tons per Month
Packaging Details:	Steel strip packed,Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Steel grade:	AISI 4340 1.6511 36CrNiMo4 SNCM439
Alloy or not:	Is Alloy
Technique:	Hot Rolled
Application:	Structural Steel Bar,Die Steel Bar,Tool Steel Bar
Standard:	ASTM,DIN,GB,AISI,JIS
Shape:	Round
Length:	1m-6m,as your request
Material:	Die alloy steel round bars
Surface:	black or bright
Product name:	Alloy Steel Round Bar 40Cr 4140 D2 alloy steel round bars
Diameter:	12mm-650mm
Delivery condition:	within15 days after received the deposit

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Gnee Steel (tianjin) Co., Ltd.

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Company Profile

AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439

AISI 4340 1.6511 36CrNiMo4 SNCM439 Round Steel Bar Round Bar Round Bar Rod

AISI 4340 steel (UNS G43400) is an ultra-high strength medium carbon low alloy steel, which combines deep hardenability, high ductility, toughness and strength, and has high fatigue resistance and creep resistance. 4340 steel & equivalents: 36CrNiMo4, 1.6511, EN24, SNCM439 etc.

Standard	JIS ASTM GB EN AISI
Size	Diameter:16-250mm	Length:4000-15000mm
Technique	Hot Rolled / Cold Rolled / Forged
Package	Export Standard Package,bundled or be required
Service	Cutting Service , Customized Fabrication Service

Supply Form & Size & Tolerance

Supply Form	Size(mm)	Process	Tolerance
Round	Φ6-Φ100	Cold Drawn	Bright/Black	Best H11
	Φ16-Φ350	Hot Rolled	Black	-0/+1mm
	Φ16-Φ350	Hot Rolled	Peeled/ground	Best H11
	Φ90-Φ1000	Hot Forged	Black	-0/+5mm
	Φ90-Φ1000	Hot Forged	Rough Turned	-0/+3mm
Flat/Square/Block	Thickness :120-800	Hot Forged	Black	-0/+8mm
Flat/Square/Block	Width:120-1500	Hot Forged	Rough Machined	-0/+3mm

Remark:Tolerance can be customized as per requests

Chemical Composition

Standard	Grade	C	Si	Mn	P	S	Cr	Ni	Mo
ASTM A29	4340	0.38-0.43	0.15-0.35	0.6-0.8	≤ 0.035	≤ 0.04	0.7-0.9	1.65-2.0	0.2-0.3
EN10250	36CrNiMo4	0.32-0.4	≤ 0.4	0.5-0.8	≤ 0.035	≤ 0.035	0.9-1.2	0.90-1.2	0.15-0.3
EN10250	1.6511	0.32-0.4	≤ 0.4	0.5-0.8	≤ 0.035	≤ 0.035	0.9-1.2	0.90-1.2	0.15-0.3
BS 970	EN24	0.36-0.44	0.1-0.4	0.45-0.7	≤ 0.035	≤ 0.04	1.0-1.4	1.3-1.7	0.2-0.35
BS 970	817M40	0.36-0.44	0.1-0.4	0.45-0.7	≤ 0.035	≤ 0.04	1.0-1.4	1.3-1.7	0.2-0.35
JIS G4103	SNCM439	0.36-0.43	0.15-0.35	0.6-0.9	≤ 0.03	≤ 0.03	0.6-1.0	1.6-2.0	0.15-0.3
GB 3077	40CrNiMoA	0.37-0.44	0.17-0.37	0.5-0.8	≤ 0.025	≤ 0.025	0.6-0.9	1.25-1.65	0.15-0.25

3.Physical Property

Density g/cm3	7.85
Melting point °C	1427
Poisson's ratio	0.27-0.30
Machinability (AISI 1212 as 100% machinability)	50%
Thermal expansion co-efficient µm/m°C	12.5
Thermal conductivity W/(m.K)	44.5
Modulus of elasticity 10^3 N/mm^2	210
Electric resistivity Ohm.mm2 /m	0.19
Specific heat capacity J/(kg.K)	460
Modulus of elasticity 10^3 N/mm2	100 ℃	200 ℃	300 ℃	400 ℃	500 ℃
Modulus of elasticity 10^3 N/mm2	205	195	185	175	165
Thermal expansion 10^6 m/(m.K)	100 ℃	200 ℃	300 ℃	400 ℃	500 ℃
Thermal expansion 10^6 m/(m.K)	11.1	12.1	12.9	13.5	13.9

Mechanical Property

Mechanical Condition	T	U	V	W	X	Y	Z
Ruling Section (mm)	150	100	63	30	30	30	30
Tensile Strength Mpa	850-1000	930-1080	1000-1150	1080-1230	1150-1300	1230-1380	>1550
Yield Strength,Mpa	≥665	≥740	≥835	≥925	≥1005	≥1080	≥1125
Elongation %	≥13	≥12	≥12	≥11	≥10	≥10	≥5
Izod Impact J	≥54	≥47	≥47	≥41	≥34	≥24	≥10
Charpy Impact J	≥50	≥42	≥42	≥35	≥28	≥20	≥9
Brinell Hardness HB	248-302	269-331	293-352	311-375	341-401	363-429	>444

High Temperature Strength

For quenched and tempered heavy forgings
Diameter mm	Yield strength MPa
Diameter mm	20 ℃	100 ℃	200 ℃	250 ℃	300 ℃	350℃	400℃
≤250	590	549	510	481	441	412	371
250-500	540	505	471	451	412	383	353
500-750	490	466	441	422	392	363	343

AISI 4340 1.6511 36CrNiMo4 SNCM439 Round Steel Bar Round Bar Round Bar Rod

FAQ

1. How fast you can make delivery?
Stock sizes 3-5 days, 10-20 workings for customize sizes.

2. How to contact us?
Trade manager online, chat with me directly.
Send an inquiry to us. Send email to me, or call me directly.

3. How can we guarantee quality?

Always a pre-production sample before mass production; Always final Inspection before shipment;

4.What can you buy from us?

Hot Rolled Steel Sheet,Hot Rolled Steel Coil,Seamless Steel Tube,Cold Rolled Steel Coil,Galvanized Steel Coil,Round Bar

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AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439

AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439

AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439

AISI 4340 Alloy Steel Round Bar

1.6511 Alloy Steel Round Bar

AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439