ASTM/AISI 4135/JIS Scm435 /34CrMo4/35CrMo/1.7220 Alloy Steel Bright Black Polished Round Bar
About products
The bright round steel bar is a round steel with a bright surface and no rolling defects and decarburization layer on the surface. It can be subdivided into peeled, polished, and polished materials. Silver bright steel is used as machine structural steel for various specialized purposes, such as for bolts with strong wear. In addition, such as spindles, piston rods, spokes, and similar components can be used as tool steel in the quenched state.
chemical composition
4135 1.7220 34CrMo4 SCM435
|
|
component
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu
|
Mo
|
|
min
|
0.33
|
0.15
|
0.7
|
-
|
-
|
0.8
|
-
|
-
|
0.15
|
|
max
|
0.38
|
0.35
|
0.9
|
0.035
|
0.04
|
1.1
|
0.25
|
0.35
|
0.25
|
Product Description
| Item |
Hard Chromed Rod |
Induction Hardened Chromed |
Nickel and Chrome Plating Bars |
| Roundness |
Diameter tolerance / 2 |
diameter tolerance / 2 |
diameter tolerance / 2 |
| Standard Length |
-for Ø ≤ 60 mm: 5600 -6200mm
-for Ø≥60 mm: 5800 -7200mm
Upon request: special lengths on all diameters |
- for Ø ≤ 60 mm: 5600 - 6200 mm
- for Ø ≥ 60 mm: 5800 - 7200mm
Upon request: special lengths on all diameters |
Up to 6000 mm
Upon request: special lengths on all diameters |
| Surface Roughness |
Ra max. 0.20 µm
(statistic average: 0.05-0.15 µm) |
Ra max. 0.20 µm
(statistic average: 0.05- 0.15 µm) |
Ra max. 0.20 µm (statistic average: 0.05-0.15 µm) |
| Chrome Layer Thickness |
min. 900 HV (0.1) |
min. 900 HV (0.1) |
min. 25 µm |
| Straightness |
≤ Ø16 mm: max. 0.3 mm: 1000 mm
> Ø16 mm: max. 0.2 mm: 1000 mm |
≤ Ø16 mm: max. 0.3 mm: 1000 mm
> Ø16 mm: max. 0.2 mm: 1000 mm |
max.0.20 mm/1000 mm |
Quick detail
steel round bar
DIA:20mm~420mm
Length:6-11m
ISO, IQNet certificate
Supply quality certificate
Description
1. Grade: Q235, SAE1020, SAE1040,SAE1045, 20Cr/SAE5120, 40Cr/SAE5140,
SCM440/SAE4140/42CrMo, SS400
2. Size: 8mm--100mm
3. Shape: flat bar, round bar, hexagonal bar, square bar, and so on.
4. Payment Terms: T/T, L/C.
5. MOQ: 5MT
6. Delivery terms: FOB or CIF
7. Shipment time: 35days or according to the qty.
8. Advantages: fast delivery, full-size, large inventories and accurate precision.
Chemical Composition
|
STEEL GRADE
|
Similar Brand
|
Chemical Composition(%)
|
|
GB
|
AISI
SAE
|
JIS
|
DIN
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
Ni(≤)
|
P(≤)
|
S(≤)
|
|
20
|
1020
|
S20C
|
CK22
|
0.17-0.24
|
0.17-0.37
|
0.35-0.65
|
0.25
|
/
|
0.25
|
0.035
|
0.035
|
|
45
|
1045
|
S45C
|
CK45
|
0.42-0.50
|
0.17-0.37
|
0.50-0.80
|
0.25
|
/
|
0.25
|
0.035
|
0.035
|
|
15CrMo
|
4115
|
SCM415
|
15CrMo5
|
0.12-0.18
|
0.17-0.37
|
0.40-0.70
|
0.80-1.10
|
0.40-0.55
|
0.30
|
0.035
|
0.035
|
|
30CrMo
|
4130
|
SCM430
|
25CrMo4
|
0.26-0.34
|
0.17-0.37
|
0.40-0.70
|
0.80-1.10
|
0.15-0.25
|
0.030
|
0.035
|
0.035
|
|
42CrMo
|
4140
|
SCM440
|
42CrMo4
|
0.38-0.45
|
0.17-0.37
|
0.50-0.80
|
0.90-1.20
|
0.15-0.25
|
0.030
|
0.035
|
0.035
|
Product Advantages
(1) lower price: less producing cost for the small steel factory, so we could supply lower price to our customers.
(2) large stocks: we are the leading steel agency in our country, so we have large stocks for many steel grade and sizes.
(3) quality assurance: 100% according the steel grade standards, MTC available before the shipment.
Approximate comparison table
|
GB
|
ISC
|
JIS
|
ASTM/AISI
|
UNS
|
ISO
|
DIN EN/DIN
|
W-Nr.
|
NF EN/NF
|
W-Nr.
|
|
35CrMo
35CrMoV
|
A30352
A31352
|
|
4135
|
G41350
|
34CrMo4
|
34CrMo4
|
1.7220
|
35CD4
|
1
|
Mechanical behavior
|
condition
|
Heat treatment or condition
|
|
Yield point
σs
Mpa
|
|
|
|
|
d≤65
|
Quenching and tempering, minimum tempering temperature 593 ºC
|
≥860
|
≥725
|
≥16
|
≥50
|
≤321
|
FAQ
1. Who are we?
Our headquarter is located in Wuxi City , China. Since 2012, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawin
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