About: Cathy Liu

32NiCrMo14-5 Alloy steel

32NiCrMo14-5 has good corrosion resistance and high strength. It is often used as thin plate and has good welding performance.

32NiCrMo14-5  Equivalent Steel Grades:

32NiCrMo14-5 Mechanical property:

Yield Strength R_p0.2 (MPa):649

Tensile Strength R_m (MPa):814

Impact KV/Ku (J):13

Elongation A (%):32

Reduction Z (%):11

28NiCr10 alloy structural steel

28NiCr10 is a kind of alloy structural steel.

Equivalent Materials to  28NiCr10 steel:

28NiCr10 mechanical properties:

Tensile strength σ B (MPA): ≥ 980 (100)
Yield strength σ s (MPA): ≥ 785 (80)
Impact toughness value α kV (J / cm2): ≥ 78 (8)
Hardness: ≤ 241hb

52CrMoV4 spring steel

52CrMoV4 spring steel,its strength and hardenability is strengthened not only by chromium and vanadium – as in the case of 51CrV4 / AISI 6150, but also by molybdenum. Molybdenum strengthens the solution during heat treatment, while chromium and vanadium form carbides that improve the hardness of the material during tempering.

Equivalent Materials to  52CrMoV4 steel:

52CrMoV4 Physical properties:

• Density: 7,79 g/cm³
• Specific heat capacity: 470 J/kg-K
• Melting temperature: 1420-1460 °C
• Thermal conductivity: 44 W/m-K

12Cr1MoV boiler steel

12Cr1MoV, alloy structural steel&boiler steel. Compared with 12CrMoV steel, it has higher oxidation resistance and thermal strength. In addition, the tensile strength of the steel should be close to that of the steel before welding and after welding. At 580 ℃, it still has high thermal strength, oxidation resistance and high permanent plasticity. The production process is simple and the welding performance is good.

Equivalent Of 12Cr1MoV Steel:

12Cr1MoV Mechanical properties:
Tensile strength (σ B / MPA): ≥ 490
Yield point (σ s / MPA): ≥ 245 elongation after fracture (δ 5 /%): ≤ 22
Reduction of area (ψ /%): ≥ 50
Impact absorption energy (aku2 / J): ≥ 71
Impact toughness value α kV (J / cm2): ≥ 88 (9)
Brinell hardness (hbs100 / 3000) (annealed or high temperature tempered): ≤ 179

21NiCrMo2 Alloy steel

21NiCrMo2 Alloy steel is a hardenable chromium, molybdenum, nickel low alloy steel more often used for carbonizing to advance a case-hardened phase as case hardening steel. This case-hardening will influence in just right wear traits.

21NiCrMo2 equivalent steel grades:

21NiCrMo2 Mechanical properties:

Tensile R_m (MPa):545 (≥)

Impact KV/Ku (J):42

Elongation A (%):33

Reduction Z (%):33

55NiCrMoV6 hot working steel

55NiCrMoV6 is a kind of hot working tool steel, which is an alloy tool steel with low alloy element content and a traditional hammer forging die steel. It has good toughness, strength, wear resistance and hardenability.

Equivalent Of 55NiCrMoV6 Steel:

55NiCrMoV6 steel properties:

Yield R_p0.2 (MPa) :≥337

Tensile R_m (MPa) :≥313

Impact KV/Ku (J):23

Elongation A (%):31

Reduction Z (%):31

Brinell hardness (HBW):144

45CrNiMoV Alloy Steel

45CrNiMoV is a low alloy ultra high strength steel. It has the advantages of high yield ratio, high strength, good toughness, high temperature strength and no temper brittleness, but poor weldability.

45CrNiMoV Mechanical Property:
Tensile strength σ B (MPA): 1553
Yield strength σ 0.2 (MPA): 1374
Elongation δ 5 (%): 14
Reduction of area ψ (%): 46
Impact toughness value α Ku (J / cm2): 51

40CrNi2Mo alloy structural steel

40CrNi2Mo round steel, 40CrNi2Mo alloy structural steel, 40CrNi2Mo is one of the alloy structural steel, also known as alloy steel, it is on the basis of high-quality carbon structural steel, appropriate to add one or more alloy elements (the total content is not more than 5%) and made of steel.

40CrNi2Mo Equivalent Steel Grades:

40CrNi2Mo Mechanical property:

Tensile strength σ B (MPA): ≥ 980 (100)

Yield strength σ s (MPA): ≥ 835 (85)

Elongation δ 5 (%): ≥ 12

Reduction of area ψ (%): ≥ 55

Impact energy Akv (J): ≥ 78

Impact toughness value α kV (J / cm2): ≥ 98 (10)

Hardness: ≤ 269HB

37SiMn2MoV QT STEEL

37SiMn2MoV steel is an advanced quenched and tempered steel with excellent comprehensive properties, high hardenability and high strength and toughness after quenching and tempering. It can be used as replacement of 35CrMo, 40CrNiMo and other steels. This kind of steel can be used as ultra-high strength steel after quenching and low temperature tempering.

37SiMn2MoV equivalent steel grades:

37SiMn2MoV Mechanical Properties:
Tensile strength σ B (MPA): ≥ 980 (100)
Yield strength σ s (MPA): ≥ 835 (85)
Elongation δ 5 (%): ≥ 12
Reduction of area ψ (%): ≥ 50
Impact energy Akv (J): ≥ 63
Impact toughness value α kV (J / cm2): ≥ 78 (8)
Hardness: ≤ 269HB

31CrMoV9 nitriding steel

31CrMoV9 is a nitriding steel which has at least 2.3%Cr, 0.15%Mo, 0.1%V as strengthening alloy elements.
Due to its high wear resistance,it is mainly used in the automotive industry and general components mechanical engineering.

31CrMoV9 equivalent steel grades:

31CrMoV9 mechanical properties:

classification of construction steel

Construction steel products are generally divided into rebar, round bar, wire rod, spiral steel and other categories.

1. Rebar
The general length of rebar is 9m and 12m. 9 meters’ Rebar is mainly used for road construction and 12 meters’ long Rebar is mainly used for bridge construction. The specification range of Rebar is generally 6-50mm, and deviation is allowed by the state. According to the strength, there are three types of rebar: HRB335, HRB400 and HRB500.

2. Round bar
As the name suggests, round bar is a solid strip steel with circular section, which is divided into hot rolling, forging and cold drawing. There are many materials of round steel, such as: 10 #, 20 #, 45 #, q215-235, 42CrMo, 40CrNiMo, GCr15, 3Cr2W8V, 20CrMnTi, 5CrMnMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, etc.
The specification of hot-rolled round bar is 5.5-250mm. The 5.5-25mm round bar belongs to small round bar steel, which is supplied in straight bars in bundles and is used for reinforcing bars, bolts and various mechanical parts. The round bar more than 25mm is mainly used for manufacturing mechanical parts or seamless steel tube blank.

3.Wire rod

There are three common types of wire rod: Q195, Q215 and Q235. However, there are only two kinds of wire rod for construction steel: Q215 and Q235. The commonly used diameters are 6.5mm, 8.0mm  and 10mm. At present, the largest wire rod in China can reach 30mm in diameter. The wire rod can also be used for wire drawing and wire rod as well as reinforcement for building reinforced concrete.

4.Spiral steel

As the name suggests, the spiral steel is the thread steel coiled together like wire rod, which is the same as the bundling method of ordinary wire rod, but it needs to be straightened when it is used. In general, 6.5-8.0-10-12-14 steel products are mostly used for construction.

There are many kinds of steel bars, which are usually classified according to the chemical composition, production process, rolling shape, supply form, diameter and the use of steel bars in the structure.

(1) According to rolling Profile
① Smooth steel bar: Grade I steel bar (Q235 steel bar) is rolled into smooth round section, and supplied in the form of circle, with diameter no more than 10mm and length of 6m ~ 12m.
② Ribbed steel bars: there are spiral, herringbone and crescent shapes. Generally, grade II and III steel bars are rolled into spiral and crescent shapes, while grade IV steel bars are rolled into spiral and crescent shapes.
③ Steel wire (including low carbon steel wire and carbon steel wire) and steel strand.
④ Cold rolled and twisted steel bar: cold rolled and cold twisted.

(2) By diameter
Steel wire (diameter 3-5mm)
Fine steel bar (diameter 6 ~ 10mm)
Coarse reinforcement (diameter greater than 22mm).

(3) Classification by use
Wire rod is generally made of ordinary carbon steel and high quality carbon steel. According to the steel distribution catalog and different uses, wire rod includes ordinary low carbon steel hot rolled wire rod, high quality carbon steel wire rod, carbon electrode wire rod, Quenched and Tempered Threaded wire rod, wire rod for steel wire rope, piano wire rod and stainless steel wire rod.
1. Ordinary low-carbon steel hot-rolled strip (gb701-65). Ordinary low-carbon steel hot-rolled strip is made of low-carbon ordinary carbon structural steel or carbon structural steel with lower yield point. It is the most widely used wire rod, also known as flexible wire. This is the general line
Main uses: the general line is mainly used for reinforced concrete structure in building, or cold drawn steel wire for binding.
2. Ordinary low carbon steel non twist controlled cooling and hot rolling wire rod (zbh4403-88), non twist controlled cooling and hot rolling wire rod are made by non twist high speed wire rod mill with controlled cooling after rolling, and the material is the same as common wire rod, but non twist controlled cooling and hot rolling wire rod have the advantages of high dimensional accuracy, good surface quality and high mechanical properties. This is the high line
Main application: non twist controlled cold and hot rolled wire rod, dimension accuracy is divided into a, B and C levels. A. Class B and C precision are suitable for wire drawing, construction, packaging and welding rod, and class B and C precision are suitable for processing into bolts, screws and nuts.

Sheryl

OTAI STEEL——Over 1000 ton of 4140/42CrMo4 plate daily stock for immediate shipment.

30CrMnSiNi2A alloy structural steel

After heat treatment, 30CrMnSiNi2A alloy structural steel can obtain high strength, good plasticity and toughness, good fatigue resistance and fracture toughness, and low fatigue crack growth rate.

30CrMnSiNi2A mechanical properties:

Tensile strength σ B (MPA): 1) 1767; 2) 1627
Elongation δ 5 (%): 1) 12; 2) 13
Reduction of area ψ (%): 50
Impact toughness value α Ku (J / cm2): 1) 79; 2) 90