Product Description
1.2738 Steel Forged Blocks for making large size of plastic mould
Equivalence
| AISI/SAE | DIN/W.Nr | JIS | GB | ||||||||
| P20+Ni | 1.2738 | / | 3Cr2MnNiMo | ||||||||
Chemical Composition (%)
| C | Si | Mn | P | S | Cr | Mo | Ni | ||||||||
| 0.35 | 0.20 | 1.30 | ≤ | ≤ | 1.80 | 0.15 | 0.90 | ||||||||
| 0.45 | 0.40 | 1.60 | 0.030 | 0.030 | 2.10 | 0.25 | 1.20 |
Dimensions
| Thickness(mm) | Width(mm) | Length(mm) | ||||||
| 20-450 | 1600-2300 | 3000-5800 |
| 47 set of Vertical Band Saw | ||||||||
| Strong cutting capacity!!!Monthly 250 tons per set | ||||||||
| We cut and machine the steel plate as your required sizes. | ||||||||
| We guarantee a prompt delivery time. | ||||||||
| P20+Ni is recommended for the Blocks thickness over 450mm |
Delivery Condition
EAF+LF+VD, Hot rolled, Black surface or Machined, Quenching + Tempering, Hardness 28-34HRC or
30-36HRC or as customized, UT 100% Passed
Characteristics
1. Widely used plastic mold steel with excellent comprehensive mechanical properties, high hardenability, uniformed hardness throughout section for large size steel after quenching and tempering.
2. With good polishing ability and low toughness.
3. To be used directly after pre-hardening, guarantee good usability and avoid deformation after heat treatment for the mold.
Applications
1. Suitable for making oversized or large size plastic molds with high precision and long service life.
2. Used for making low melting-pointed alloyed die casting moulds, like Tin, Zinc, Lead.
Forging Technique
| Heat Temperature | Start Forging Temperature | Finish Forging Temperature | Cooling Method | ||||||||
| 1140-1180ºC | 1050-1140ºC | ≥850ºC | Pit Cooling | ||||||||
What we can offer?
We offer a wide range of steel products in a wide variety of dimensions and executions, acc.to the common international specifications or customerized.
Machining and heat treatment are available.
Also, we advise you in choosing the right materials.
Shape Available
Solid round bar
Flat bar
Square bar
Hexagon bar
Block
Plate
Sheet
Wire rod
Strip
| DIN | JIS | Stock | Application |
|
Hot Work Tool Steel | H11 | 1.2343 | SKD6 | √ | Die Casting Dies,Extrusion Dies, Hammer Dies, |
H13 | 1.2344 | SKD61 | √ | ||
H10 | 1.2365 | SKD7 |
| ||
-- | 1.2367 | -- |
| ||
L6 | 1.2714 / 1.2713 | SKT4 | √ | ||
H12 | 1.2606 | SKD62 |
| ||
H21 | 1.2581 | SKD5 | √ | ||
Cold Work Tool Steel | D3 | 1.2080 | SKD1 | √ | Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc. |
-- | 1.2601 | ~SKD11 | √ | ||
D2 | 1.2379 | ~SKD11 | √ | ||
-- | 1.2379 MOD | DC53 (Daido) | √ | ||
D6 | 1.2436 | -- |
| ||
O1 | 1.2510 | SKS3 | √ | ||
O2 | 1.2842 | -- |
| ||
A2 | 1.2363 | SKD12 |
| ||
S1 | 1.2550 | -- |
| ||
S7 | 1.2357 | -- |
| ||
-- | 1.2767 | SKT6 |
| ||
L2 | 1.2210 | -- |
| ||
Plastic | P20 | 1.2311 | -- | √ | Mold Base, Core & Cavity, Bumper Mold etc. |
P20+Ni | 1.2738 | -- | √ | ||
P20+S | 1.2312 | -- | √ | ||
-- | 1.2316 | -- |
| ||
420 | 1.2083 | SUS420J2 | √ | ||
-- | -- | NAK80 (Daido) | √ | ||
Alloy Steel | 4120 | 25CrMo4 / 1.7218 | SCM420 |
| Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings etc. |
4135 | 34CrMo4 / 1.7220 | SCM435 |
| ||
4130 | 34CrMo4 / 1.7220 | SCM430 | √ | ||
4140 | 42CrMo4 / 42CrMoS4 / 1.7225 | SCM440 | √ | ||
4142 | 41CrMo4 / 1.7223 | SCM440 |
| ||
4145H | -- | -- |
| ||
4330V | -- | -- |
| ||
4340 | 34CrNiMo6 / 1.6582 | SNCM439 |
| ||
5115 | 16MnCr5 / 16MnCrS5 / 1.7131 |
|
| ||
5120 | 20MnCr5 / 20MnCrS5 / 1.7147 | SMnC420H |
| ||
5140 | 41Cr4 / 41CrS4 / 1.7035 | SCr440 | √ | ||
8620 | 21NiCrMo2 / 1.6523 | SNCM220 |
| ||
8640 | 40NiCrMo2-2 / 1.6546 | SNCM240 |
| ||
-- | 18CrNiMo7-6 / 17CrNiMo6 / 1.6587 | -- |
| ||
9840 | 36CrNiMo4 / 1.6511 | -- |
| ||
E71400 | 41CrAlMo7-10 / 1.8509 | SACM1 |
| ||
-- | 34CrAlNi7 / 1.8550 | -- |
| ||
Bearing Steel | E52100 | 100Cr6 / 1.3505 | SUJ2 | √ | Bearing, Shafts |
-- | 100CrMn6 / 1.3520 | -- |
| ||
-- | 100CrMo7-3 / 1.3536 | -- |
| ||
Spring Steel | 5155 | 55Cr3 / 1.7176 | SUP9 |
| Springs |
6150 | 51CrV4 / 1.8159 | SUP10 |
| ||
9261 | 60CrSi7 / 1.7108 | -- |
| ||
Carbon Steel | 1010 | CK10 / C10E / 1.1121 | S10C |
| Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings etc. |
1020 | C22 / 1.0402 | S20C | √ | ||
1040 | CK40 / C40E / 1.1186 | S40C | √ | ||
1045 | CK45 / C45E / 1.1191 | S45C | √ | ||
1050 | CK50 / C50E / 1.1206 | S50C | √ | ||
1055 | CK55 / C55E / 1.1203 | S55C |
| ||
1064 | CK60 / C60E / 1.1221 | S58C |
| ||
High Speed Tool Steel | M2 | 1.3343 | SKH51 | √ | Reamer, |
M7 | 1.3348 | -- |
| ||
M42 | 1.3247 | SKH59 | √ | ||
M35 | 1.3243 | SKH55 | √ | ||
T1 | 1.3355 | SKH2 |
| ||
T15 | 1.3202 | -- |
| ||
T42 | 1.3207 | SKH57 |
|
Note:
1). √ means we have stoc
2). Delivery Condition:
Smelting: EAF+LF+VD (+ESR)
Making: Hot rolled, Cold rolled, Forged, Cold Drawn
Heat Treatment: Untreated, Annealing, N+T, Q+T
Surface: Black, Peeled, Turned, Milled, Grinded, Polished
A1: Ningbo Ningshing Precision Machinery Group Co., Ltd., formerly known as Ningbo Ningshing Special-Steel Group Co., Ltd., is the leading distributor of Special Steel, and also a professional mold base maker in China. Our business involves special steel trading, machining processing, mold base making, heat treatment, CNC machines manufacturing.
Q2: Are you a manufacturer or a trader?
A2: For Special Steel, we are the one of the leading distributors and service center in China. 9 warehouses with over 50,000 tons of regular stock. Our workshop has various kinds of equipments for sawing, milling, grinding, drilling etc.
For mold base, we are a professional manufacturer, with 24 sets of CNC machines, 3 axis and 5 axis, CMM for inspection. We produce medium-large sized mold base for plastic injection mold and die casting die.
Q3: How do you control the quality of steels?
A3: Firstly, we have very close and deep relationship with Chinese Prime Mills, choose supplier carefully, and regard them as the long term business partner. Based on the long term cooperation, we concentrate on special steel business and expand the market step by step. Secondly, we have own technical center which is formed by the experienced engineers and technicians whom ever worked for prime mills. We control the quality in production process, in-out warehouse.
Q4:: Which kind of processing can you do?
A4: We do machining processing like cutting, milling, grinding, turning, peeling, drilling, CNC machining. Meanwhile, we do vacuum heat treatment for die and mold.