Category Archives: Products

51CrMoV4 Structural steel

51CrMoV4 steel Otai stock huge stockist, belongs to Structural Cr-Mo-V-steel. 51CrMoV4 Steel plate.

Otai accepts all kinds of large, medium and small orders, and can help customers with cutting, machining, and heat treatment to solve customers’ problems in one stop.

Otai’s advantage:
1. There are thousands of tons of steel inventory in our warehouse, especially for 4140/42CrMo plate, Otai is the largest stockist in South China.
2. Small order can be received. Compared with large steel mills, MOQ is lower, which is more conducive to foreign small and medium stockers.
3. We can finish all kinds of machining process like milling, polishing, turning and other processing.
4. With independent testing equipment, including spectrometers, UT flaw detection equipment, etc., compared to traders, we can fully guarantee product quality for customers.

3 major traps in steel procurement:
Using low-value materials as high-value materials; Otai will never be provide shoddy goods.

Offering low prices to attract customers regardless of customer performance requirements; Otai will only quote the most accurate price based on customer needs.

Delivery is not possible within the delivery period, making customers unable to keep up with the project; Otai promises to deliver within the fastest delivery time.

Material 51CrMoV4 Equivalent:

51CrMoV4 Properties(Mechanical properties):

Tensile Strength (Mpa):1158

Yield Strength (Mpa):1034

Elongation (%):15

Reduction in Area (%):53

Hardness (HB): 335

32crmov12-10 Cold work steel

DIN 32CrMoV12-10 Steel is a high-quality Cold work tool steel, It belongs to the high-quality high carbon alloy tool steel. Oil Quenched & Tempered Hardness is 300 HB. 32CrMoV12-10 steel Annealing delivery hardness less than 250HB.

32crmov12-10 Mechanical Properties:

Tensile strength(MPa):≥912

Impact energy KV (J):43

Elongation A (%):31

Reduction Z (%):21

Brinell hardness (HBW):324

32crmov12-10 equivalent steel grades:

1.2542 tool steel

1.2542 belongs to cold work alloy tool steel.

1.2542 steel – Equivalent Materials:

1.2542 steel Mechanical Properties:

Yield Rp0.2 (MPa):＞136

Tensile Rm (MPa):＞374

Impact KV/Ku (J):34

Elongation A (%):42

Reduction Z (%):22

Brinell hardness (HBW):434

56Si7 spring steel

56Si7 belongs to spring steel.

56Si7 Steel equivalent standards:

56Si7 steel Mechanical Properties:

Tensile strength (MPa) (+A):740

proof strength (MPa):600

Elongation(+A):12

Brinell hardness (HB): (+A):248

56Si7 steel Applications

56Si7 steel  is  applied to  different types of springs as leaf springs, helical springs, belleville washers.

86CrMoV7 cold work steel

86CrMoV7 steel belongs to cold work alloy tool steel. 86CrMoV7 features for its high strength and hardness, good weldability, toughness, machinability and so on.

86CrMoV7 material equivalent steel grades:

86CrMoV7 mechanical properties:

Yield Strength  (MPa):≥446

Tensile Strength (MPa):≥329

Impact KV/Ku (J):32

Elongation A (%): 41

Reduction Z (%):24

90SiCr5 cutting tool steel

90SiCr5 is a low alloy measuring and cutting tool steel with high hardenability, hardenability and tempering stability. The steel is suitable for step quenching or isothermal quenching, and the deformation of heat treatment is small.

1.7147 carburized steel

1.7147 material is carburized steel (case hardening steel) with high strength and toughness and good hardenability. The quenching deformation is small, the low temperature toughness and the machinability are good, but the welding performance is low. It’s generally used after carburizing quenching or quenching and tempering.

1.7147 material equivalent steel grades:

1.7147 mechanical properties:

Yield R_p0.2 (MPa):764 (≥)

Tensile R_m (MPa):464 (≥)

Impact KV/Ku (J):43

Elongation A (%):43

Reduction Z (%):22

100CrMo7 tool steels

The 100CrMo7 is chromium high-purity steels with high hardness, equivalent to tool steels, and with significant resistance to fatigue stress.100CrMo7 material is a much better alternative and the equivalent of the 100Cr6 material. Molybdenum-containing products have better hardening capacity and can be used with much larger cross-sections compared to the 100Cr6 grade.

100CrMo7 Steel equivalent standards:

100CrMo7 steel mechanical properties:
Hardness in spheroidized annealing condition +AC: < 217 HB

Hardness in spheroidized annealing condition after drawing +AC+C: < 251 HB

Hardness of tubes and sleeves <321 HB

Density ρ 7,79 g/cm3

1.3537 bearing steel

1.3537 steel is bearing steel. Small amount of Chromium and trace amounts of Molybdenum provides for some carbide formation, and it can hold decent polished edge.It has characteristics similar to 100Cr6 steel(1.3537 vs 100Cr6). The addition of molybdenum guarantees toughness for diameters up to 200mm.it has good wear resistance, with good non-deformability.

1.3537 Steel equivalent standards:

1.3537 steel  mechanical properties:
Hardness in spheroidized annealing condition +AC: < 217 HB
Hardness in spheroidized annealing condition after drawing +AC+C: < 251 HB
Hardness of tubes and sleeves <321 HB
Density ρ 7,79 g/cm3

1.3537 steel Application

1.3537 works better  for small to medium knives, after appropriate heat treatment might do well in a larger blade. It’s suitable for the construction of bearings,cylinders, small rolling mills, knives, etc.

1.7765 alloy carbon steel

DIN  1.7765 (2008) 1.7765 belongs to tool steel, alloy carbon steel, Pipe steel for machine weapons.

1.7765 Steel equivalent standards:

1.7765 steel Mechanical Properties:

Yield R_p0.2 (MPa):342 (≥)

Tensile R_m (MPa):159 (≥)

Impact KV/Ku (J):24

Elongation A (%):32

Reduction Z (%):11

23MnNiMoCr54 steel

23MnNiMoCr54 steel is based on low carbon steel, by adding Mn, Ni, Mo, Cr, Al and other alloy elements, through the solid solution strengthening, grain boundary strengthening and second phase particle strengthening of these elements, to improve the strength, plasticity and toughness of the steel, at the same time by controlling the harmful elements s, P in the steel to improve the fatigue life of the chain.

23MnNiMoCr54 steel Mechanical Properties:

Tensile strength (n / mm2): ≥ 1180
Yield strength (n / mm2): ≥ 980
Elongation after fracture (%): ≥ 10
Reduction of area (%): ≥ 50
Impact absorption energy (J) ≥ 40

1.6523 case hardening steel

1.6523 steel  is a low alloy nickel, chromium, molybdenum case hardening steel,1.6523 alloy steel  has good external and internal strength, so there with high wear-resistant. As a carburized steel, it is usually used to make many medium-strength tools.

1.6523 Steel equivalent standards:

1.6523 steel Mechanical Properties: