| Price: | US $ 440/Ton |
|---|---|
| Trade Terms: | FOB,CFR,CIF |
| Min Order: | 10/Piece |
| Pay Type: | L/C,T/T,D/P,Paypal,Money Gram |
1.Product Name
4140 42CrMo4(1.7225) EN19 SCM440 Hot Rolled Steel Round Bar
2.Equivalent Grades
Standard | Grade |
Astm/AISI/SAE | 4140 |
DIN | 42CrMo4(1.7225) |
BS | EN19 |
JIS | SCM440 |
GB | 42CrMo |
3.Chemical Composition
Grade | C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Al |
AISI 4140 | 0.38 0.41 | 0.15 0.35 | 0.85 1.00 | Max 0.015 | Max 0.040 | Max 0.25 | 0.80 1.10 | 0.15 0.25 | Max 0.35 | 0.012 0.030 |
Mechanical Properties
Tensile Strength σb(MPa) | ≥1080(110) |
Yield Strength σ5(%) | ≥12 |
Area Reduction ψ (%) | ≥45 |
Impact Work Akv (J) | ≥63 |
Notched Bar Impact Strength αkv(J/cm2) | ≥78(8) |
Hardness | ≤217HB |
Sample Size | 25mm |
4.Quality Control
Production Process:
Common Product
Blast Furnance→ Molten Iron Pretreatment→Converter→LF→VD/RH→
ContinuousCasting→Hot Rolling(KOCKS)→ Heat Treatment→ UT Inspection→ Finish Product
EAF→LF→VD/RH→ Continuous Casting→Hot Rolling(KOCKS)→ Heat
Treatment→ UT Inspection→ Finish Product
High Alloy Steel
EAF→VOD/ESR→Ingot Moulds→Forging→Hot Rolling→Inspection→Heat
Treatment→UT Inspection
Gas Content Requirements: O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
Nonmetal impurity:2
Grain Size:5 to 8
MacroEtch:Not more than Grade 2(C2R2S2)
Compression Ratio:
20-50mm: use 180*220mm steel billets
52-85mm: use 180*220mm steel billets
85-120mm: use 260*300mm steel billets
130-210mm: use 650mm round billets
210-280mm: use 800mm steel billets
UT Test:SEP1921-84,GR.3 CLASS C/C or better
5.Dimention, shape and size tolerence
Size Tolerances(hot-rolled steel round bar or square bar)
d/a(mm) | 5.5-7 | 7-20 | 20-30 | 30-50 | 50-80 | 80-110 | 110-150 | 150-190 | 190-250 |
(mm) | +0.30 -0.30 | +0.35 -0.35 | +0.40 -0.40 | +0.50 -0.50 | +0.70 -0.70 | +1.0 -1.0 | +1.3 -1.3 | +2.0 -2.0 | +2.5 -2.5 |
Length:5-12m or customized( +/-50mm)
Straightness: ≤3mm/m
6.Delivery Condition
Hot rolled+heat treament (Normalized/Annealing / Q+T)
7 Packing:
Bars from different heating furnances will not be mixed and dispatched.
Bars will be bundles and securely metal strapped in 3 min places of the bar length and
tagged properly.
For further processing products such as cold drawn/peeled or heat treated goods, plastics
bag wrapped or pallet loading is available according to customer's demands.
Contact Person:Shirley Li Mobile Phone:+86 18963469098
| Prod Model: | 4140 42crmo4 scm440 en19 |
|---|---|
| Markets: | North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Production Process: | Eaf(Ebt) + Lf + Vd + Continuous Casting + Hot Roll |
| Type: | Alloy Steel Bar |
| Standard: | BS |
| Technique: | Hot Rolled |
| Special Use: | Mold Steel |
| Application: | Structural Steel Bar |
| Shape: | Round |
