Alloy steel 4340 (439/1.6511/40CrNiMo) 1.High strength/toughness 2.high hardenability 3.good impact capacity 4.large stocks

 Detailed Product Description

Alloy Steel AISI 4340 /DIN 1.6511/JIS SNCM439/GB 40CrNiMo

1.AISI 4340,JIS SNCM439,DIN 1.6511 2.Certification:ISO 9001:2000 3.Alloy structural steels 4.Manufacturer,favorable quotation

1.Alloy steel sae 4340 for high quality

2.AISI 4340  GB 40CrNiMoA  alloy structural steels

3. Composition:

Element	C	Mn	P	S	Si	Cr	Ni	Mo
Weight %	0.36- 0.44	0.50- 0.80	0.015 (max)	0.025 (max)	0.17- 0.37	0.60- 0.90	1.25- 1.75	0.15- 0.25

4. Supply specification

Grade	Tech requirement	Specification	Delivery condition
4340 round bar	Hot rolled: Round bar	Dia12mm~300mm   Length:4m~5.8m	Black or turned
4340 plate	forged: plate	thickness :20mm~200mm  width:205mm~610mm	Black or milled in four faces
4340 round bar	Forged:     Round bar	Dia 255mm~550mm	Black or turned

 

6. Quality assurance:

 

We are the ISO 9001:2008 authentication enterprises and we can provide the enterprise's quality written guarantee for all the exported products.

Alloy Steel AISI 4340 /DIN 1.6511/JIS SNCM439/GB 40CrNiMo