Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
This high-performance alloy steel round bar is manufactured with ASTM4140 and 42CrMo4 materials, designed specifically for boiler and heat exchanger applications, with a diameter range of 20-300mm to meet diverse thermal equipment size requirements. It combines excellent high-temperature resistance, corrosion resistance and mechanical strength, perfectly adapting to the harsh working environment of boilers and heat exchangers.
ASTM4140 and 42CrMo4 are high-quality alloy steels with outstanding hardenability, toughness and creep resistance. They can withstand long-term operation under high temperature and pressure, not easy to deform or crack, ensuring the stability and safety of boiler and heat exchanger systems. The round bar is produced through advanced hot rolling or forging process, featuring a dense internal structure, uniform wall thickness, precise dimensional tolerance and smooth surface, reducing wear and fluid resistance during use.
Widely used in manufacturing boiler tubes, heat exchanger components, thermal power station equipment, and high-temperature pipeline parts. It undergoes strict quality inspection, including chemical composition analysis, high-temperature performance testing and dimensional accuracy detection, fully complying with international industry standards. With reliable performance, long service life and good machinability, it provides a safe and durable material solution for boiler and heat exchanger manufacturing.
| Products |
round bar |
| Material |
SS400 S45C S20C |
| Standard |
ASTM A240,GB/T3280-2007,JIS4304-2005,ASTM A167 |
| Length |
3-12m |
| Size |
8-400mm |
| Application |
ships building industry,petroleum,chemical industries, war and electricity industries, food processing and medical industry, boiler heat exchanger, machinery and hardware fields. |
| Payment Terms |
L/C , T/T or Western Union |
ABOUT US
We specialsied in kinds of steel products more many years,especially in hot rolled 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
1. Grade:
45# 45B S45C C45 CK45 Cm45 AISI1045 SAE1045 ASTM1045 XC45 1.0503 0.1191 1.1201
2. Specification:
Dia: 20-300mm, Length:2000-13000mm or as required
3. Process:
Hot rolled, black surface
4. MOQ:
20mt.
5.. Chemical composition:
| Grade |
C |
Si |
Mn |
P |
S |
B |
| 45# |
0.42
0.50
|
0.17
0.37
|
0.50
0.80
|
Max
0.035
|
Max
0.035
|
|
| 45B |
0.42
0.49
|
0.17
0.37
|
0.60
0.90
|
Max
0.035
|
Max
0.035
|
0.0005
0.0035
|
| S45C |
0.42
0.48
|
0.15
0.35
|
0.60
0.90
|
Max
0.030
|
Max
0.035
|
|
| 1045 |
0.43
0.50
|
0.15
0.35
|
0.60
0.90
|
Max
0.030
|
Max
0.050
|
|
6.Quality condition
1): Straightness: 3mm/m (max)
2): Corner Radius: 3(max)
3): The ends will be end cut or gas cut
4): No cracks on the surface
7. Standard:
According to national standard (GB)for our products, if not, supply according to national standards(GB) or agreement.
|
Standards
|
ASTM / ASME,GB,DIN, JIS,T14975, etc
|
|
Steel Grade
|
200, 201B , 201H ,301, 303, TP304, TP304L/304L, 321 ,TP321, 316, TP316L, 316L, 316Ti,
|
|
Out Diameter
|
6mm to 2000mm or customized
|
|
Wall Thickness
|
0.5-220mm
|
|
Length
|
5.8m ,6m,or customized
|
|
Tolerance
|
Out diameter : +/-0.15mm ,Thickness: +/-11% of wall thicknessLength: +/-4.5mm - 0mm
|
|
Surface
|
Mirror Polish,Satin Polish,Without Polish,NO.1,NO.4
|
|
MOQ
|
1 ton
|
|
Supply ability
|
3000 tons per month
|
|
Packing
|
3, bundles to be covered by polythene & strapped securely
|
|
Payment terms
|
T/T or L/C,TT 30% in advance ,70% balance after received B/L copy
|
|
Delivery terms
|
FOB CFR CIF EX Works DDU
|
|
Delivery time
|
Within 5-20 days after received the deposit or as client's requirements
|
Delivery&packing
Packaging: In wooded cases , pallets or according to clients' requirements
Shipping: Tianjin port, Shanghai port and the other main ports in China
Our service
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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