143 - 187 HB BS 970 805H20 Alloy Steel Tube Cold Drawn with Normalized / Quenched
Product Details
alloy steel tube
,alloy steel seamless tube
BS970 805H20 Alloy Steel Tube
BS970 Alloy Steel Grade
Alloy steels can be supplied with a grain size of 5 to 8 determined in accordance with BS4490 or another method by agreement. Steel supplied to hardenability reqquirements are supplied fine-grained and if coarse grain steel is specifically required, then the hardenaility shall be subject to negotiation.
251A58 251H60
251A60 525H60
525A58 685H57
525A60 704H60
525A61 705H60
685A57 735H51
704A60 805H60
705A60 735A51
735A54 925A60
BS970 805H20 Chemical Composition Table
| C | Si | Mn | S | P | Cr | Mo | Ni |
| 0.17-0.23 | 0.10-0.35 | 0.60-0.95 | ≤0.025 | ≤0.006 | 0.35-0.65 | 0.15-0.25 | 0.35-0.75 |
Hardness: 143-187 HB
| HRC values at distance | |||||||||
| 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | ||
| 48 | 47 | 44 | 40 | 35 | 32 | 30 | 28 | MAX | Hardness (HRC) |
| 41 | 37 | 31 | 25 | 22 | 20 | - | - | MIN | |
|
Steel | Hardening temperature | Requirements for hardness test | Maximum hardness HB | ||
| Preheat treatment | Austenitizing temperature | Bars and billets for forging | Forgings and bars for machining | ||
| 805H20 | 830-840 | 930-950 | 925 | 207 | 207 |
20CrNiMo
| Chemical Composition Table | |||||||
| C | Si | Mn | S | P | Cr | Mo | Ni |
| 0.17-0.23 | 0.17-0.37 | 0.60-0.95 | ≤0.035 | ≤0.035 | 0.40-0.70 | 0.20-0.30 | 0.35-0.75 |
| Mechanical Properties | ||
| Tensile strength σb (MPa) | Yield strength σs (MPa) | Elongation δ5 (%) |
| ≥980(100) | ≥785(80) | ≥9 |
|
Main market | Middle east, Africa, North and South America, East and West Europe, South and southeast Asia, Australia
|
| Payment term | 30% T/T in advance, the balance 70% paid before shipment |
| Minimum quantity of order | 5 ton |
| Delivery period | 45-60 days after receiving 30% T/T in advance |
| Packing | antirust protection, In hexagon bundles, in wooden box |
| Quantity tolerance | +/-10% |
Who We are ?
-------A professional steel pipes materials inventor, manufacturer and solution provider Torich Interational Co.,Ltd is a professional manufacturer and exporter of steel pipes materials.
It is an international marketing and sales company specialized in steel tubes, which holds the factories of Seamless Steel Tubes with Carbon and Alloy Steel Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless & Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.
Our factory was established since 1997, with the name of Haiyan Sanxin Steel Pipe Co., Ltd. The factories` technicians are of great engineering experience in steel pipe industry for more than 20 years, which are in great command of production technology for Cold Drawing and Cold Rolling. So we have strong technician team and manufacturing capability.
-
Auto Parts ASTM A513 Cold Rolling Welded Steel Tubes with DOM Production
Auto Parts ASTM A513 Welded Steel Tubes with DOM production ASTM A513 Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing Applications: for Machinery, Mechanical Engineering 1. Standard: ASTM A513 cold rolling welded precision steel tubes 2. Steel Grade: SAE1010, SAE1020, other materials upon agreement with customers. 3. Production method: Cold rolling on the weled steel tubes, to reach high accuracy on the OD and WT tolerance 4. Size range: O.D.:6-350mm W.T. -
25mm Diameter Bright Annealing Seamless Steel Tube for Hydraulic Systems
EN10305-1 E235 E355 NBK Bright Annealing Precision Steel Pipes for Hydraulic Systems EN10305-1 NBK Bright Annealed Precision steel pipes for Hydraulic system OD:4-80 (mm) WT0.5-10 (mm) Length 1000-12000mm Product name: Seamless Precision Steel Pipe Application: for hydraulic systems precision steel pipes for Hydraulic system OD (mm) WT (mm) Length (mm) 4 0.5 5800-6000 4.0 1.0 5800-6000 5.0 1.0 5800-6000 6.0 1.0 5800-6000 6.0 1.5 5800-6000 8.0 1.0 5800-6000 9.5 0.89 5800-6000 -
Precision Seamless Black Phosphating Steel Tube for Hydraulic Systems
Steel Pipes with high precision for Hydraulic Systems with Black Phosphating surface Black Phosphated Hydraulic Tubes with High Precision and tight tolerance, the tubes are produced by precision cold drawn and cold rolling, then bright annealed in a protected atmosphere, afterwards it is blackphosphated on the surface Production process: DIN series tubes, cold drawn and bright annealed precision seamless steel tube is used as the tube to be phosphated. The phosphorization is -
Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37
Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37 Production Process: Cold rolling by Cold pilger machine and Cold rolling machine,galvanized and zinc plated could be applied. Cold Rolled and Galvanized Steel Tube Production process: DIN highly accurate, cold rolled and bright seamless steel tube is used as the tube to be galvanized. The outer wall of tube is electroplated. The caps are covered at two ends of tube to prevent from the dust. Main Features:
