Complaint
SAE AISI 12L14 steel is a resulfurized, rephosphorized and lead containing free-machining material, and is widely used in machinery, energy, metallurgy, aerospace and other fields.
The lower carbon content of 12L14 steel, especially the low melting point lead particles, ensures inherent lubrication of the steel during machining and embrittlement of the liquid metal at low machining speeds, thus avoiding the formation of Built-Up-Edge (BUE). In addition, phosphorus and sulfide inclusions form sources of stress concentration and discontinuities in the ferrite substrate, resulting in breakable chips. The sulfide-lubricated zone formed during machining reduces friction and tool wear, further improving its machinability. All these properties combine to make this material the most machinable of all common carbon and alloy steels. This machinability can be evaluated in terms of low cutting forces and good chip breaking characteristics.
12L14 material density is 7.87 g/cm³ (0.284 lb/in³); Tensile strength is 390 MPa (57 ksi) for hot rolled, 540 MPa (78 ksi) for cold rolled; Yield strength is 230 MPa (34 ksi) for hot rolled, 410 MPa (60 ksi) for cold rolled; Hardness is 121 HB (hot rolled), 163 HB (cold rolled).
| Chemical Composition | ||||||
| Standard | Steel | C, ≤ | Mn | P | S | Pb |
| ASTM A29/A29M | 12L14 | 0.15 | 0.85-1.15 | 0.04-0.09 | 0.26-0.35 | 0.15-0.35 |
| Carbon Steel | Type of Processing | Tensile strength, MPa (ksi), ≥ | Yield strength, MPa (ksi), ≥ | Elongation % ≥ | Reduction in area, % | Hardness, HB | Average machinability rating, % |
| 12L14 | Hot rolled | 390 (57) | 230 (34) | 22 | 45 | 121 | |
| Cold drawn | 540 (78) | 410 (60) | 10 | 35 | 163 | 170 |
Based on cold drawn 1212 carbon steel machinability rating = 100%.
| AISI SAE 12L14 Steel Properties | Metric | Imperial |
| Density | 7.87 g/cm3 | 0.284 lb/in3 |
| Specific heat capacity | 472 J/kg·K | 0.113 Btu/lb ·°F |
| Electrical resistivity | 0.174 μΩ·m | 6.85 μΩ·in |
| Elastic modulus (Modulus of Elasticity) | 200 GPa | 29 x 106 psi |
| Shear Modulus | 80 GPa | 11.6 x 106 psi |
| Coefficient of thermal expansion (CTE) | 11.5×10-6/K at 20 °C | 6.39 μin./in.·°F at 68 °F |
| 12.2×10-6/K at 0-300 °C | 6.78 μin./in.·°F at 32-572 °F | |
| 13.9×10-6/K at 0-500 °C | 7.72 μin./in.·°F at 32-1000 °F | |
| Poissons Ratio | 0.29 | 0.29 |
SAE AISI 12L14 carbon steel equivalent material is listed in the table below, including US ASTM SAE, AISI; ISO, Japanese JIS, Chinese GB and European EN standard, etc.
| AISI 12L14 Steel Equivalent Material | |||||||||||||||||||
| US | European | ISO | German | Japan | China | Australia | India | Rusia | Korea | ||||||||||
| Standard | Steel Grade | Standard | Steel Name (Material Number) | Standard | ISO Designation | Standard | Steel Name (Material Number) | Standard | Steel Grade | Standard | Steel Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade |
| AISI, SAE; ASTM A29/A29M | 12L14 | EN ISO 683-4 :2018 | 10SPb20 (1.0722) | ISO 683-4:2018 | 10SPb20 | DIN EN 10087 (Withdrawn) | 10SPb20 (1.0722) | JIS G4804 | SUM24L | GB/T 8731 | Y12Pb | ||||||||
Products | Grade |
Carbon structure steel | Q195, Q215, Q235, Q275 |
Low alloy high strength structure steel | Q295, Q345, Q390, Q420, Q460 |
Prime Carbon structure steel | 10#, 20#, 35#, 45#, 60#, 20Mn, 65Mn, B2, B3, JM20, SH45,S45C, C45 1015 1020 1025 1030 1035 1045 1050 |
Alloy structure steel | 30Mn2, 40Mn2, 27SiMn, 42Crmo,20Cr, 40Cr, 20CrMo, 35CrMo, 20CrMnTi, 30CrMnTi,20MnVB, 20MnTiB, 20CrNiMo, Q345B, 35MnBM, 40MnB,36Mn2V, 45MnV, |
Spring Steel | 65Mn, 60Si2Mn, 50CrVA |
Bearing Steel | GCr15, GCr15GD,55SiMoV |
Structural steels subject to end-quench hardenability requirements | 20CrMnTi, 30CrMnTi, 20Cr, 40Cr, 30CrMo, 42CrMoA, 27SiMn, 40Mn2H, 20CrNiMo, 40Mn2, q345b, 35MnBM, 40MnB,45MnV. |
Oil wells structural steel | 37Mn5, 36Mn2V |
Marine anchor chain steel | CM490, CM690, M30Mn2 |
| Products name | chrome-molybdenum low-alloy steel Aerospace industry 4140 steel round rod Carbon steel Bar |
| Material | ASTM A105 SAE 1018 C10 C20 ST52.3 S355J2S355J2+N S355JR IS 2062 1012 1015 SAE1008SAE1010 EDD EN2A EN8 EN8D C45 SAE1050SAE1541 AISI 1015 SAE1536 EN8M EN15 C35C40 C55 EN9 C60 EN42J C80 ASTM A106etc.AISI 4130AMS 6348AMS 6350AMS 6351AMS 6360AMS 6361AMS 6362AMS 6370AMS 6371AMS 6373AMS 6374AMS 6528AMS 7496ASTM A29ASTM A322ASTM A331ASTM A506ASTM A507ASTM A513ASTM A519ASTM A646ASTM A752ASTM A829MIL S-18729MIL S-6758SAE J1397SAE J404SAE J412SAE J770SAE 4130UNS G41300DIN 1.7218UNI 25 CrMo 4JIS SCCrM 1JIS SCM 2SS 2225B.S. CDS 110AFNOR 25 CD 4 (S)4130 STEEL FORGINGSRound BarFlat BarRectangular BarRolled RingsForged RingsDisc OTHER PRODUCT FORMSSheetPlateExtrusionExtrusion anglesBilletIngotMachined Parts |
| OD | 8-480mm |
| length | 1-12 |
| inspection | X-ray inspection,manual ultrasonic inspection,surface inspection |
| Technique | hot rolled/cold rolled |
| section | Round |
| Productivity | 10000ton/month |
| Package | Standard Export Package(Detailed pictures as follows) |
| Surface Treatment | Black Painted, PE Coated, Galvanized or Customized all available |
| Country of Origin | CHINA |
| Product Name | ASTM 1015 25mm Hot Rolled Forged Alloy Carbon Steel Round Bar |
| Grades | 1045 1020 20MnCr5 |
| Surface | Black,Polish,Oiled |
| Technique | Hot rolled |
| Delivery Condition | Black Surface,Rough machined or as required |
| Test | 100% Ultrasonic test |
| Process | EAF + LF + VD + Forged + Heat Treatment |
| Dimension | Diameter : 16mm - 250mm |
| Length : 4000-15000mm or cut to length | |
| Application | 1): Can be used in many fields such as building, automobile, shipbuilding, petrochemical, machinery, medicine, food, electric power, energy, space, building and decoration, etc. 2): Can be made into mould template, mortise pin, column 3): This kind of steel have good mechanical property, is widely used in structural parts which may support stress alternation, especially made into some connecting rods, bolts, wheel gear... 4): This kind of steel is the most common blanks and materials of shaft parts. Its die welding material model is CMC-E45. |
| Inspection | Mill Test Certificate is supplied with shipment,SGS inspection is accepted if needed |
| Package | Standard export seaworthy package or as required. |
| Port | Tianjin Port or Customer designated port of destination |
| Delivery Time | 5-15 days,according to customers' grades,dimension and quantities |
| Category | Grades | Sizes | Standard |
| Carbon structure steel | Q195, Q215, Q235, Q275 | 16mm-250mm | GB/T700-2006 |
| Low alloy high strength structure steel | Q295, Q345, Q390, Q420, Q460 | 16mm-250mm | GB/T1591-2008 |
| Prime Carbon structure steel | 10#, 20#, 35#, 45#, 60#, 20Mn, 65Mn, B2, B3, JM20, SH45,S45C, C45 | 16mm-250mm | GB/T699-1999 |
| Alloy structure steel | 30Mn2, 40Mn2, 27SiMn, 42Crmo, 20Cr,40Cr,20CrMo, 35CrMo, 20CrMnTi, 30CrMnTi, 20MnVB, 20MnTiB, 45MnV, 20CrNiMo, Q345B, 35MnBM,40MnB,36Mn2V, | 16mm-250mm | GB/T3077-1999 |
| Spring Steel | 65Mn, 60Si2Mn, 50CrVA | 16mm-250mm | GB/T1222-84 |
| Bearing Steel | GCr15, GCr15GD,55SiMoV | 16mm-250mm | GB/T18254-2002 |
| Structural steels subject to end-quench hardenability requirements | 20CrMnTi, 30CrMnTi, 20Cr, 40Cr, 30CrMo, 42CrMoA, 27SiMn, 40Mn2H, 20CrNiMo, 40Mn2, q345b,35MnBM, 40MnB,45MnV. | 16mm-250mm | GB/T5216-2004 |
| Oil wells structural steel | 37Mn5, 36Mn2V | 16mm-250mm | Q/LYS248-2007 |
| Marine anchor chain steel | CM490, CM690, M30Mn2 | 16mm-250mm | YB/T66-1987 |
| GB/T18669-2002 |
Shandong Zhuosheng Steel Co.,Ltd is a large-scale iron and steel enterprise integrating iron and steel production, processing, distribution and trade. The comprehensive strength has jumped to the forefront of the domestic steel industry.
Zhuosheng Steel is committed to the research and development, production and processing of carbon steel and profiles and pipes, with strong research and development strength and reliable quality assurance capabilities. Products are suitable for nuclear power, aviation, marine engineering, oil exploration, construction and other fields. The comprehensive annual production capacity is 500,000 tons, and the products are exported to more than 100 countries and regions.
