AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439
1000 Kilogram
MOQ
$0.60 / Kilogram
Price
AISI 4340 1.6511 Alloy Steel Round Bar 36CrNiMo4 SNCM439
Features Gallery Product Description Request A Quote
Features
Basic Infomation
Place of Origin: Tianjin
Brand Name: Gnee
Certification: SGS
Model Number: AISI 4340 1.6511 36CrNiMo4 SNCM439
High Light:

AISI 4340 Alloy Steel Round Bar

,

1.6511 Alloy Steel Round Bar

Payment & Shipping Terms
Packaging Details: Steel strip packed,Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 1000 Ton/Tons per Month
Specifications
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
Product Description

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
Peeled/ground Best H11

Φ90-Φ1000

Hot Forged
Black -0/+5mm
Rough Turned -0/+3mm

Flat/Square/Block
Thickness :120-800
Hot Forged
Black -0/+8mm
Width:120-1500 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
1.6511

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
817M40
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 ℃
205 195 185 175 165
Thermal expansion 10^6 m/(m.K) 100 ℃ 200 ℃ 300 ℃ 400 ℃ 500 ℃
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
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 RodAISI 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

 

Recommended Products
Get in touch with us
Contact Person : Ms. Kelly Zhang
Tel : +86 15824687445
Fax : 86-372-5055180
Characters Remaining(20/3000)