Cast iron LR4
L1 cast iron
L2 cast iron
Cast iron L3
Cast iron L4
Cast iron L5
Cast iron L6
Cast iron LR1
LR2 cast iron
Cast iron LR3
Cast iron LR4
Cast iron LR5
Cast iron LR6
Cast iron LR7
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ЛР4 |
| Designation GOST Latin | LP4 |
| Transliteration | LR4 |
| The chemical elements | BeB4 |
Description
Cast iron LR4 applies: for further melting in iron shops in the production of iron castings.
Note
Foundry pig iron, refined magnesium.
Standards
| Name | Code | Standards |
|---|---|---|
| Cast iron | В11 | GOST 4832-95 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Fe | Al | V | Ti | Pb | Mg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 4832-95 | 3.4-4.5 | ≤0.01 | ≤0.12 | ≤1 | ≤0.04 | 2-2.4 | The rest | ≤0.005 | ≤0.05 | ≤0.05 | ≤0.005 | ≤0.019 |
Fe is the basis.
According to GOST 4832-95, cast iron is divided into 3 groups according to the manganese content: I group ≤0.30%, II group 0.30-0.50%, III group 0.50-1.00%; by the content of phosphorus is divided into 2 classes: class A ≤0,080%, class B ≤0,12%; on the content of sulfur is divided into 2 categories: 1 category ≤0.0050%, 2 category ≤0.010%.
According to GOST 4832-95, cast iron is divided into 3 groups according to the manganese content: I group ≤0.30%, II group 0.30-0.50%, III group 0.50-1.00%; by the content of phosphorus is divided into 2 classes: class A ≤0,080%, class B ≤0,12%; on the content of sulfur is divided into 2 categories: 1 category ≤0.0050%, 2 category ≤0.010%.
