Grade F738M Class F1-45 430F
USA UNS S43020
Corresponding Standard ASTM F738M-2002
Stainless Steel Metric Bolts, Screws, and Studs
Classification Ferritic Stainless Steel
F738M Class F1-45 430F Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value - - - - 0.15 16 -
Maximum Value 0.12 1 1.25 0.06 - 18 0.6
F738M Class F1-45 430F Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Hardness
HBW
M1.6~M5 AF ≥450 HRB
≤85
M6~M36 AF ≥450 ≥250 ≤85
• D-nominal thread diameter
1 Approximate Comparison Table Ferritic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Sweden
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS
Y10Cr17
(Y1Cr17)
S11717 430F SUS 430F STS 430F 430F S43020 X7CrS 17
X14CrS 17
8a
(ISO 630-1:1987)
X14CrMoS 17
(X12CrMoS 17)
1.4104 Z10CF 17 X14CrMoS 17 1.4104 2383
2 Approximate Comparison Table Ferritic Stainless Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM UNS ISO Numerical Grade Numerical Grade
Y10Cr17
(Y1Cr17)
GB/T 20878-2024
S11717 SUS430F 430F
ASTM A959
S43020 X7CrS17
ISO 15510
4004-430-20-I (1.4004)

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