i Chemical Element Explanations in DH36 Steel Plate
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🔬 Quick Element Reference:
C (Carbon)
≤0.18% • Increases strength & hardness
≤0.18% • Increases strength & hardness
Mn (Manganese)
0.90-1.60% • Strength & toughness
0.90-1.60% • Strength & toughness
Si (Silicon)
≤0.50% • Deoxidizer
≤0.50% • Deoxidizer
P (Phosphorus)
≤0.035% • Harmful element
≤0.035% • Harmful element
C (Carbon): ≤0.18% - Influences strength and hardness.
Si (Silicon): ≤0.50% - Increases strength, deoxidizer.
Mn (Manganese): 0.90-1.60% - Enhances strength and toughness, desulfurizer.
P (Phosphorus): ≤0.035% - Harmful element, reduces toughness.
S (Sulfur): ≤0.035% - Harmful element, causes hot shortness.
Cu (Copper): ≤0.35% - Improves corrosion resistance.
Cr (Chromium): ≤0.20% - Improves corrosion resistance and hardness.
Ni (Nickel): ≤0.40% - Enhances toughness and low-temperature properties.
Nb (Niobium): 0.02-0.05% - Refines grain structure, improves strength.
V (Vanadium): 0.05-0.10% - Refines grain structure, improves toughness.
Ti (Titanium): ≤0.02% - Refines grain, fixes carbon and nitrogen.
Mo (Molybdenum): ≤0.08% - Improves high-temperature strength and corrosion resistance.
N (Nitrogen): - (Controlled by production process)
Al (Aluminum): ≥0.015% - Deoxidizer, refines grain structure.
📝 Common Questions About DH36 Elements:
Q: Which elements improve strength in DH36? A: C, Mn, Si, Nb, V
Q: Which elements are harmful in DH36? A: P and S (limited to ≤0.035%)
Q: Which elements improve corrosion resistance? A: Cu, Cr, Mo
Q: Which elements refine grain structure? A: Al, Nb, V, Ti
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* Typical values according to ABS, DNV, LR, BV, CCS specifications. Actual limits may vary by approval.
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Source: CEHE Steel - Certified DH36 shipbuilding steel plate manufacturer.